jQuery .on // source https://jsbin.com/dovuquk

index.html

<style id="jsbin-css">
/* line 5, ../../app/assets/stylesheets/partials/_reset.css.sass */
html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, address, cite, code, em, img, strong, sub, sup, b, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, nav, output, section, time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

/* line 13, ../../app/assets/stylesheets/partials/_reset.css.sass */
article, aside, details, figcaption, figure, footer, header, hgroup, nav, section {
  display: block;
}

/* line 16, ../../app/assets/stylesheets/partials/_reset.css.sass */
li {
  list-style: none;
}

/* line 19, ../../app/assets/stylesheets/partials/_reset.css.sass */
blockquote {
  quotes: none;
}
/* line 21, ../../app/assets/stylesheets/partials/_reset.css.sass */
blockquote:before, blockquote:after {
  content: "";
  content: none;
}

/* line 26, ../../app/assets/stylesheets/partials/_reset.css.sass */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicRegular-856f3e14904bb5d664d4f11ea1a3251a.woff) format("woff");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicBold-a99c9ab0c113214d69c24eed51a755ca.woff) format("woff");
  font-weight: bold;
  font-style: normal;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicRegularItalic-798fb44a2ea7b7bb00b00e141bee6e34.woff) format("woff");
  font-weight: normal;
  font-style: italic;
}

/* line 62, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split, .sorting,
.filters,
#filters {
  zoom: 1;
}
/* line 64, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split:before, .sorting:before,
.filters:before,
#filters:before, .split:after, .sorting:after,
.filters:after,
#filters:after {
  content: "";
  display: table;
}
/* line 68, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split:after, .sorting:after,
.filters:after,
#filters:after {
  clear: both;
}

@-webkit-keyframes load {
  /* line 79, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 81, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@-moz-keyframes load {
  /* line 84, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 86, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@keyframes load {
  /* line 89, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 91, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@-webkit-keyframes spin {
  /* line 95, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 97, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-moz-keyframes spin {
  /* line 101, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 103, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes spin {
  /* line 107, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 109, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-webkit-keyframes pulse {
  /* line 115, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 117, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@-moz-keyframes pulse {
  /* line 120, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 122, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@-o-keyframes pulse {
  /* line 125, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 127, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@keyframes pulse {
  /* line 130, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 132, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

/* line 5, ../../app/assets/stylesheets/partials/_base.css.sass */
html {
  background: url(//d3n3e0roqdrhcc.cloudfront.net/assets/bg-html-915211d8095672e2b45fe4718bd20fca.png) center 300px no-repeat #252b30;
  background-size: 111px 82px;
}
/* line 8, ../../app/assets/stylesheets/partials/_base.css.sass */
html.iframe {
  background: none;
}

/* line 61, ../../../../.gem/ruby/1.9.3/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/typography/_vertical_rhythm.scss */
* html {
  font-size: 112.5%;
}

/* line 64, ../../../../.gem/ruby/1.9.3/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/typography/_vertical_rhythm.scss */
html {
  font-size: 18px;
  line-height: 1.33333em;
}

/* line 13, ../../app/assets/stylesheets/partials/_base.css.sass */
body {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 31px;
  right: 0;
  background: #343b42;
  color: white;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  min-width: 650px;
  -webkit-font-smoothing: antialiased;
}
/* line 20, ../../app/assets/stylesheets/partials/_base.css.sass */
body.iframe {
  background: none;
  left: 20px;
  right: 20px;
}
@media screen and (min-width: 800px) {
  /* line 25, ../../app/assets/stylesheets/partials/_base.css.sass */
  body.is-expanded {
    left: 250px;
  }
}

/* line 30, ../../app/assets/stylesheets/partials/_base.css.sass */
h1, h2, h3, h4 {
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-weight: bold;
}

/* line 34, ../../app/assets/stylesheets/partials/_base.css.sass */
h1 {
  font-size: 3.61111em;
  line-height: 1.10769em;
  margin-top: 0.36923em;
  margin-bottom: 0.36923em;
  color: white;
  padding: 0 24px;
}

/* line 41, ../../app/assets/stylesheets/partials/_base.css.sass */
h2 {
  font-size: 2.22222em;
  line-height: 1.2em;
  margin-bottom: 0.096em;
  -webkit-transition: background 0.2s 0.2s;
  -webkit-transition-delay: ease-in-out;
  -moz-transition: background 0.2s 0.2s ease-in-out;
  -o-transition: background 0.2s 0.2s ease-in-out;
  transition: background 0.2s 0.2s ease-in-out;
}
/* line 45, ../../app/assets/stylesheets/partials/_base.css.sass */
h2 b {
  color: white;
}

/* line 48, ../../app/assets/stylesheets/partials/_base.css.sass */
h3 {
  font-size: 1.11111em;
  line-height: 1.2em;
}

/* line 51, ../../app/assets/stylesheets/partials/_base.css.sass */
h4 {
  font-size: 0.77778em;
  line-height: 1.71429em;
  color: white;
}

/* line 55, ../../app/assets/stylesheets/partials/_base.css.sass */
p {
  margin-bottom: 1.06667em;
}

/* line 58, ../../app/assets/stylesheets/partials/_base.css.sass */
pre {
  padding-top: 1.33333em;
  padding-bottom: 1.33333em;
  margin-bottom: 1.33333em;
  -webkit-transition: border-color 0.2s ease-in-out;
  -moz-transition: border-color 0.2s ease-in-out;
  -o-transition: border-color 0.2s ease-in-out;
  transition: border-color 0.2s ease-in-out;
  background: #e4dfdb;
  background: rgba(196, 65, 23, 0.35);
  border-color: #c44117;
  overflow-x: auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* line 69, ../../app/assets/stylesheets/partials/_base.css.sass */
pre code {
  background: none;
  color: white;
  padding: 0;
}

/* line 74, ../../app/assets/stylesheets/partials/_base.css.sass */
img {
  max-width: 100%;
}

/* line 79, ../../app/assets/stylesheets/partials/_base.css.sass */
a {
  color: #a0cafe;
  text-decoration: none;
}
/* line 82, ../../app/assets/stylesheets/partials/_base.css.sass */
a:hover, a:focus {
  text-decoration: underline;
}

/* line 93, ../../app/assets/stylesheets/partials/_base.css.sass */
code {
  font-size: 0.83333em;
  line-height: 1.6em;
  font-family: Monaco, Courier, monospace;
  padding: 0 3px;
}

/* line 98, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs {
  background: #252b30;
  color: #a0cafe;
  cursor: pointer;
  padding: 2px 4px;
  position: relative;
}
/* line 105, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs:hover {
  color: white;
}
/* line 107, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs:after {
  content: url(//d3n3e0roqdrhcc.cloudfront.net/assets/icn-link-f9744ae5a55101dcba73a424ffa97fd1.png);
  left: 2px;
  margin-right: 2px;
  position: relative;
  top: -5px;
}

/* line 114, ../../app/assets/stylesheets/partials/_base.css.sass */
em {
  font-style: italic;
}

/* line 117, ../../app/assets/stylesheets/partials/_base.css.sass */
strong {
  font-weight: bold;
}

/* line 120, ../../app/assets/stylesheets/partials/_base.css.sass */
::selection {
  background: #a0cafe;
  color: white;
}

/* line 124, ../../app/assets/stylesheets/partials/_base.css.sass */
::-moz-selection {
  background: #a0cafe;
  color: white;
}

/* line 130, ../../app/assets/stylesheets/partials/_base.css.sass */
.course {
  background: url(//d3n3e0roqdrhcc.cloudfront.net/assets/bg-body-e1bd71c8db06545b3f76eb77f49596c9.jpg) center top;
  color: white;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  min-height: 100%;
}

/* line 138, ../../app/assets/stylesheets/partials/_base.css.sass */
.split {
  padding-top: 2em;
  border-top: 1px solid rgba(148, 163, 172, 0.3);
}

/* line 143, ../../app/assets/stylesheets/partials/_base.css.sass */
.split-a,
.split-b {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  float: left;
  width: 45%;
}

/* line 149, ../../app/assets/stylesheets/partials/_base.css.sass */
.split-a {
  margin-right: 10%;
}

/* line 154, ../../app/assets/stylesheets/partials/_base.css.sass */
.btn {
  background: #4cb64f;
  border: 1px solid #081f09;
  color: black;
  cursor: pointer;
  display: block;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-size: 1.25em;
  font-weight: bold;
  line-height: 1;
  padding: 0.5em 24px 0.5em 24px;
  text-align: center;
  text-transform: uppercase;
}
/* line 167, ../../app/assets/stylesheets/partials/_base.css.sass */
.btn:hover, .btn:focus {
  background: #70c573;
  text-decoration: none;
}

/* line 174, ../../app/assets/stylesheets/partials/_base.css.sass */
.tsm {
  font-size: 1.66667em;
  line-height: 1.6em;
}

/* line 4, ../../app/assets/stylesheets/partials/_iframes.css.sass */
iframe {
  height: 70px;
}

/* line 11, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#exercise-110 .rendered iframe,
.lab-2 .rendered iframe,
.lab-3 .rendered iframe {
  height: 200px;
}

/* line 15, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h1 {
  font-size: 1.33333em;
  line-height: 1.5em;
  margin-top: 0em;
  padding: 0;
}
/* line 19, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h2 {
  font-size: 1em;
  line-height: 1.33333em;
  position: relative;
  top: 2px;
}
/* line 23, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h3 {
  font-size: 0.88889em;
  line-height: 1.5em;
}
/* line 25, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe p {
  font-size: 0.77778em;
  line-height: 1.71429em;
}
/* line 27, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe button {
  font-size: 1em;
  line-height: 1.33333em;
  margin-top: 0.4em;
  margin-bottom: 0.4em;
  background: #4cb64f;
  border: 1px solid #081f09;
  color: black;
  cursor: pointer;
  display: block;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-weight: bold;
  line-height: 1;
  padding: 5px 24px 3px 24px;
  text-transform: uppercase;
  width: 100%;
}
/* line 42, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe button:hover, .iframe button:focus {
  background: #70c573;
  text-decoration: none;
}
/* line 47, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe li span {
  font-size: 0.66667em;
  line-height: 2em;
}
@media screen and (min-width: 1024px) {
  /* line 47, ../../app/assets/stylesheets/partials/_iframes.css.sass */
  .iframe li span {
    font-size: 0.77778em;
    line-height: 1.71429em;
  }
}
/* line 51, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe .details {
  font-size: 0.88889em;
  line-height: 1.5em;
  background: #82add8;
  border: 1px solid #191d20;
  bottom: 0.5em;
  color: #191d20;
  display: block;
  font-weight: bold;
  left: 0.5em;
  padding: 3px 0;
  right: 0.5em;
  text-align: center;
}

/* line 66, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations,
#tours {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin-top: 1.33333em;
}
/* line 70, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations:after,
#tours:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

/* line 77, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li,
#tours > li,
#tours > ul > li,
#all-tours ul li {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  background: rgba(37, 43, 48, 0.5);
  float: left;
  min-height: 6em;
  padding: 0.5em;
  position: relative;
  vertical-align: top;
  width: 22.75%;
}
/* line 89, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li h2,
#tours > li h2,
#tours > ul > li h2,
#all-tours ul li h2 {
  margin-bottom: 0.66667em;
}
/* line 91, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li + li,
#tours > li + li,
#tours > ul > li + li,
#all-tours ul li + li {
  margin-left: 3%;
}
/* line 93, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li.highlight,
#tours > li.highlight,
#tours > ul > li.highlight,
#all-tours ul li.highlight {
  background: rgba(88, 95, 99, 0.5);
}

/* line 95, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote {
  margin-right: -42px;
  position: absolute;
  right: 50%;
  top: 37px;
}
/* line 100, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote li {
  background: #3b454d;
  display: inline-block;
  min-height: 0;
  overflow: hidden;
  margin: 0 5px;
}
/* line 106, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote a {
  color: #4cb64f;
  padding: 4px 10px;
}
/* line 109, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote.highlight {
  background-color: #999999;
}
/* line 111, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote.highlight {
  background: #252b30;
}
/* line 113, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote + li {
  margin-left: 5%;
}
@media screen and (min-width: 1170px) {
  /* line 95, ../../app/assets/stylesheets/partials/_iframes.css.sass */
  .vote {
    margin-right: 0;
    top: 10px;
    right: 3px;
  }
}

/* line 120, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour,
#tour,
#all-tours ul li {
  width: 24.25%;
}
/* line 124, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour p,
#tour p,
#all-tours ul li p {
  margin-bottom: 5px;
}
/* line 126, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour button,
#tour button,
#all-tours ul li button {
  font-size: 0.77778em;
  line-height: 1.28571em;
}
/* line 128, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour .photos,
#tour .photos,
#all-tours ul li .photos {
  display: none;
  position: absolute;
  left: 210px;
  top: 0;
}
/* line 133, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour .photos li,
#tour .photos li,
#all-tours ul li .photos li {
  float: left;
  position: relative;
  margin-left: 20px;
  max-width: 170px;
  background: #252b30;
  border: 1px solid #121415;
  padding: 5px 5px 0 5px;
  width: 26%;
}
</style>
<div id="tour">
  <h2>Paris, France Tour</h2>
  <p>$2,499 for 7 Nights</p>
  <button>See photos from our last tour</button>
  <ul class="photos">
    <li>
      <img src="http://d3n3e0roqdrhcc.cloudfront.net/assets/photos/paris1.jpg">
      <span>Arc de Triomphe</span>
    </li>
    <li>
      <img src="http://d3n3e0roqdrhcc.cloudfront.net/assets/photos/paris2.jpg">
      <span>The Eiffel Tower</span>
    </li>
    <li>
      <img src="http://d3n3e0roqdrhcc.cloudfront.net/assets/photos/paris3.jpg">
      <span>Notre Dame de Paris</span>
    </li>
  </ul>
</div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script id="jsbin-javascript">
$(document).ready(function() {
  $('#tour').on('click', 'button', function() {
    $('.photos').slideToggle();
  });

  // create showPhotos() function
  function showPhotos(){
   $(this).find('span').slideToggle();
  }
  
  $('.photos').on('mouseenter', 'li', showPhotos);
  $('.photos').on('mouseleave', 'li', showPhotos);
  

});
</script>

<script id="jsbin-source-css" type="text/css">/* line 5, ../../app/assets/stylesheets/partials/_reset.css.sass */
html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, address, cite, code, em, img, strong, sub, sup, b, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, nav, output, section, time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

/* line 13, ../../app/assets/stylesheets/partials/_reset.css.sass */
article, aside, details, figcaption, figure, footer, header, hgroup, nav, section {
  display: block;
}

/* line 16, ../../app/assets/stylesheets/partials/_reset.css.sass */
li {
  list-style: none;
}

/* line 19, ../../app/assets/stylesheets/partials/_reset.css.sass */
blockquote {
  quotes: none;
}
/* line 21, ../../app/assets/stylesheets/partials/_reset.css.sass */
blockquote:before, blockquote:after {
  content: "";
  content: none;
}

/* line 26, ../../app/assets/stylesheets/partials/_reset.css.sass */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicRegular-856f3e14904bb5d664d4f11ea1a3251a.woff) format("woff");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicBold-a99c9ab0c113214d69c24eed51a755ca.woff) format("woff");
  font-weight: bold;
  font-style: normal;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicRegularItalic-798fb44a2ea7b7bb00b00e141bee6e34.woff) format("woff");
  font-weight: normal;
  font-style: italic;
}

/* line 62, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split, .sorting,
.filters,
#filters {
  zoom: 1;
}
/* line 64, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split:before, .sorting:before,
.filters:before,
#filters:before, .split:after, .sorting:after,
.filters:after,
#filters:after {
  content: "";
  display: table;
}
/* line 68, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split:after, .sorting:after,
.filters:after,
#filters:after {
  clear: both;
}

@-webkit-keyframes load {
  /* line 79, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 81, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@-moz-keyframes load {
  /* line 84, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 86, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@keyframes load {
  /* line 89, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 91, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@-webkit-keyframes spin {
  /* line 95, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 97, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-moz-keyframes spin {
  /* line 101, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 103, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes spin {
  /* line 107, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 109, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-webkit-keyframes pulse {
  /* line 115, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 117, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@-moz-keyframes pulse {
  /* line 120, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 122, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@-o-keyframes pulse {
  /* line 125, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 127, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@keyframes pulse {
  /* line 130, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 132, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

/* line 5, ../../app/assets/stylesheets/partials/_base.css.sass */
html {
  background: url(//d3n3e0roqdrhcc.cloudfront.net/assets/bg-html-915211d8095672e2b45fe4718bd20fca.png) center 300px no-repeat #252b30;
  background-size: 111px 82px;
}
/* line 8, ../../app/assets/stylesheets/partials/_base.css.sass */
html.iframe {
  background: none;
}

/* line 61, ../../../../.gem/ruby/1.9.3/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/typography/_vertical_rhythm.scss */
* html {
  font-size: 112.5%;
}

/* line 64, ../../../../.gem/ruby/1.9.3/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/typography/_vertical_rhythm.scss */
html {
  font-size: 18px;
  line-height: 1.33333em;
}

/* line 13, ../../app/assets/stylesheets/partials/_base.css.sass */
body {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 31px;
  right: 0;
  background: #343b42;
  color: white;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  min-width: 650px;
  -webkit-font-smoothing: antialiased;
}
/* line 20, ../../app/assets/stylesheets/partials/_base.css.sass */
body.iframe {
  background: none;
  left: 20px;
  right: 20px;
}
@media screen and (min-width: 800px) {
  /* line 25, ../../app/assets/stylesheets/partials/_base.css.sass */
  body.is-expanded {
    left: 250px;
  }
}

/* line 30, ../../app/assets/stylesheets/partials/_base.css.sass */
h1, h2, h3, h4 {
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-weight: bold;
}

/* line 34, ../../app/assets/stylesheets/partials/_base.css.sass */
h1 {
  font-size: 3.61111em;
  line-height: 1.10769em;
  margin-top: 0.36923em;
  margin-bottom: 0.36923em;
  color: white;
  padding: 0 24px;
}

/* line 41, ../../app/assets/stylesheets/partials/_base.css.sass */
h2 {
  font-size: 2.22222em;
  line-height: 1.2em;
  margin-bottom: 0.096em;
  -webkit-transition: background 0.2s 0.2s;
  -webkit-transition-delay: ease-in-out;
  -moz-transition: background 0.2s 0.2s ease-in-out;
  -o-transition: background 0.2s 0.2s ease-in-out;
  transition: background 0.2s 0.2s ease-in-out;
}
/* line 45, ../../app/assets/stylesheets/partials/_base.css.sass */
h2 b {
  color: white;
}

/* line 48, ../../app/assets/stylesheets/partials/_base.css.sass */
h3 {
  font-size: 1.11111em;
  line-height: 1.2em;
}

/* line 51, ../../app/assets/stylesheets/partials/_base.css.sass */
h4 {
  font-size: 0.77778em;
  line-height: 1.71429em;
  color: white;
}

/* line 55, ../../app/assets/stylesheets/partials/_base.css.sass */
p {
  margin-bottom: 1.06667em;
}

/* line 58, ../../app/assets/stylesheets/partials/_base.css.sass */
pre {
  padding-top: 1.33333em;
  padding-bottom: 1.33333em;
  margin-bottom: 1.33333em;
  -webkit-transition: border-color 0.2s ease-in-out;
  -moz-transition: border-color 0.2s ease-in-out;
  -o-transition: border-color 0.2s ease-in-out;
  transition: border-color 0.2s ease-in-out;
  background: #e4dfdb;
  background: rgba(196, 65, 23, 0.35);
  border-color: #c44117;
  overflow-x: auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* line 69, ../../app/assets/stylesheets/partials/_base.css.sass */
pre code {
  background: none;
  color: white;
  padding: 0;
}

/* line 74, ../../app/assets/stylesheets/partials/_base.css.sass */
img {
  max-width: 100%;
}

/* line 79, ../../app/assets/stylesheets/partials/_base.css.sass */
a {
  color: #a0cafe;
  text-decoration: none;
}
/* line 82, ../../app/assets/stylesheets/partials/_base.css.sass */
a:hover, a:focus {
  text-decoration: underline;
}

/* line 93, ../../app/assets/stylesheets/partials/_base.css.sass */
code {
  font-size: 0.83333em;
  line-height: 1.6em;
  font-family: Monaco, Courier, monospace;
  padding: 0 3px;
}

/* line 98, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs {
  background: #252b30;
  color: #a0cafe;
  cursor: pointer;
  padding: 2px 4px;
  position: relative;
}
/* line 105, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs:hover {
  color: white;
}
/* line 107, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs:after {
  content: url(//d3n3e0roqdrhcc.cloudfront.net/assets/icn-link-f9744ae5a55101dcba73a424ffa97fd1.png);
  left: 2px;
  margin-right: 2px;
  position: relative;
  top: -5px;
}

/* line 114, ../../app/assets/stylesheets/partials/_base.css.sass */
em {
  font-style: italic;
}

/* line 117, ../../app/assets/stylesheets/partials/_base.css.sass */
strong {
  font-weight: bold;
}

/* line 120, ../../app/assets/stylesheets/partials/_base.css.sass */
::selection {
  background: #a0cafe;
  color: white;
}

/* line 124, ../../app/assets/stylesheets/partials/_base.css.sass */
::-moz-selection {
  background: #a0cafe;
  color: white;
}

/* line 130, ../../app/assets/stylesheets/partials/_base.css.sass */
.course {
  background: url(//d3n3e0roqdrhcc.cloudfront.net/assets/bg-body-e1bd71c8db06545b3f76eb77f49596c9.jpg) center top;
  color: white;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  min-height: 100%;
}

/* line 138, ../../app/assets/stylesheets/partials/_base.css.sass */
.split {
  padding-top: 2em;
  border-top: 1px solid rgba(148, 163, 172, 0.3);
}

/* line 143, ../../app/assets/stylesheets/partials/_base.css.sass */
.split-a,
.split-b {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  float: left;
  width: 45%;
}

/* line 149, ../../app/assets/stylesheets/partials/_base.css.sass */
.split-a {
  margin-right: 10%;
}

/* line 154, ../../app/assets/stylesheets/partials/_base.css.sass */
.btn {
  background: #4cb64f;
  border: 1px solid #081f09;
  color: black;
  cursor: pointer;
  display: block;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-size: 1.25em;
  font-weight: bold;
  line-height: 1;
  padding: 0.5em 24px 0.5em 24px;
  text-align: center;
  text-transform: uppercase;
}
/* line 167, ../../app/assets/stylesheets/partials/_base.css.sass */
.btn:hover, .btn:focus {
  background: #70c573;
  text-decoration: none;
}

/* line 174, ../../app/assets/stylesheets/partials/_base.css.sass */
.tsm {
  font-size: 1.66667em;
  line-height: 1.6em;
}

/* line 4, ../../app/assets/stylesheets/partials/_iframes.css.sass */
iframe {
  height: 70px;
}

/* line 11, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#exercise-110 .rendered iframe,
.lab-2 .rendered iframe,
.lab-3 .rendered iframe {
  height: 200px;
}

/* line 15, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h1 {
  font-size: 1.33333em;
  line-height: 1.5em;
  margin-top: 0em;
  padding: 0;
}
/* line 19, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h2 {
  font-size: 1em;
  line-height: 1.33333em;
  position: relative;
  top: 2px;
}
/* line 23, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h3 {
  font-size: 0.88889em;
  line-height: 1.5em;
}
/* line 25, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe p {
  font-size: 0.77778em;
  line-height: 1.71429em;
}
/* line 27, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe button {
  font-size: 1em;
  line-height: 1.33333em;
  margin-top: 0.4em;
  margin-bottom: 0.4em;
  background: #4cb64f;
  border: 1px solid #081f09;
  color: black;
  cursor: pointer;
  display: block;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-weight: bold;
  line-height: 1;
  padding: 5px 24px 3px 24px;
  text-transform: uppercase;
  width: 100%;
}
/* line 42, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe button:hover, .iframe button:focus {
  background: #70c573;
  text-decoration: none;
}
/* line 47, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe li span {
  font-size: 0.66667em;
  line-height: 2em;
}
@media screen and (min-width: 1024px) {
  /* line 47, ../../app/assets/stylesheets/partials/_iframes.css.sass */
  .iframe li span {
    font-size: 0.77778em;
    line-height: 1.71429em;
  }
}
/* line 51, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe .details {
  font-size: 0.88889em;
  line-height: 1.5em;
  background: #82add8;
  border: 1px solid #191d20;
  bottom: 0.5em;
  color: #191d20;
  display: block;
  font-weight: bold;
  left: 0.5em;
  padding: 3px 0;
  right: 0.5em;
  text-align: center;
}

/* line 66, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations,
#tours {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin-top: 1.33333em;
}
/* line 70, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations:after,
#tours:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

/* line 77, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li,
#tours > li,
#tours > ul > li,
#all-tours ul li {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  background: rgba(37, 43, 48, 0.5);
  float: left;
  min-height: 6em;
  padding: 0.5em;
  position: relative;
  vertical-align: top;
  width: 22.75%;
}
/* line 89, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li h2,
#tours > li h2,
#tours > ul > li h2,
#all-tours ul li h2 {
  margin-bottom: 0.66667em;
}
/* line 91, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li + li,
#tours > li + li,
#tours > ul > li + li,
#all-tours ul li + li {
  margin-left: 3%;
}
/* line 93, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li.highlight,
#tours > li.highlight,
#tours > ul > li.highlight,
#all-tours ul li.highlight {
  background: rgba(88, 95, 99, 0.5);
}

/* line 95, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote {
  margin-right: -42px;
  position: absolute;
  right: 50%;
  top: 37px;
}
/* line 100, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote li {
  background: #3b454d;
  display: inline-block;
  min-height: 0;
  overflow: hidden;
  margin: 0 5px;
}
/* line 106, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote a {
  color: #4cb64f;
  padding: 4px 10px;
}
/* line 109, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote.highlight {
  background-color: #999999;
}
/* line 111, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote.highlight {
  background: #252b30;
}
/* line 113, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote + li {
  margin-left: 5%;
}
@media screen and (min-width: 1170px) {
  /* line 95, ../../app/assets/stylesheets/partials/_iframes.css.sass */
  .vote {
    margin-right: 0;
    top: 10px;
    right: 3px;
  }
}

/* line 120, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour,
#tour,
#all-tours ul li {
  width: 24.25%;
}
/* line 124, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour p,
#tour p,
#all-tours ul li p {
  margin-bottom: 5px;
}
/* line 126, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour button,
#tour button,
#all-tours ul li button {
  font-size: 0.77778em;
  line-height: 1.28571em;
}
/* line 128, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour .photos,
#tour .photos,
#all-tours ul li .photos {
  display: none;
  position: absolute;
  left: 210px;
  top: 0;
}
/* line 133, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour .photos li,
#tour .photos li,
#all-tours ul li .photos li {
  float: left;
  position: relative;
  margin-left: 20px;
  max-width: 170px;
  background: #252b30;
  border: 1px solid #121415;
  padding: 5px 5px 0 5px;
  width: 26%;
}


</script>

<script id="jsbin-source-javascript" type="text/javascript">$(document).ready(function() {
  $('#tour').on('click', 'button', function() {
    $('.photos').slideToggle();
  });

  // create showPhotos() function
  function showPhotos(){
   $(this).find('span').slideToggle();
  }
  
  $('.photos').on('mouseenter', 'li', showPhotos);
  $('.photos').on('mouseleave', 'li', showPhotos);
  

});
</script>

jsbin.dovuquk.css

/* line 5, ../../app/assets/stylesheets/partials/_reset.css.sass */
html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, address, cite, code, em, img, strong, sub, sup, b, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, nav, output, section, time, mark, audio, video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

/* line 13, ../../app/assets/stylesheets/partials/_reset.css.sass */
article, aside, details, figcaption, figure, footer, header, hgroup, nav, section {
  display: block;
}

/* line 16, ../../app/assets/stylesheets/partials/_reset.css.sass */
li {
  list-style: none;
}

/* line 19, ../../app/assets/stylesheets/partials/_reset.css.sass */
blockquote {
  quotes: none;
}
/* line 21, ../../app/assets/stylesheets/partials/_reset.css.sass */
blockquote:before, blockquote:after {
  content: "";
  content: none;
}

/* line 26, ../../app/assets/stylesheets/partials/_reset.css.sass */
table {
  border-collapse: collapse;
  border-spacing: 0;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicRegular-856f3e14904bb5d664d4f11ea1a3251a.woff) format("woff");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicBold-a99c9ab0c113214d69c24eed51a755ca.woff) format("woff");
  font-weight: bold;
  font-style: normal;
}

@font-face {
  font-family: "KlavikaWeb";
  src: url(//d3n3e0roqdrhcc.cloudfront.net/assets/KlavikaWebBasicRegularItalic-798fb44a2ea7b7bb00b00e141bee6e34.woff) format("woff");
  font-weight: normal;
  font-style: italic;
}

/* line 62, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split, .sorting,
.filters,
#filters {
  zoom: 1;
}
/* line 64, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split:before, .sorting:before,
.filters:before,
#filters:before, .split:after, .sorting:after,
.filters:after,
#filters:after {
  content: "";
  display: table;
}
/* line 68, ../../app/assets/stylesheets/partials/_settings.css.sass */
.split:after, .sorting:after,
.filters:after,
#filters:after {
  clear: both;
}

@-webkit-keyframes load {
  /* line 79, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 81, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@-moz-keyframes load {
  /* line 84, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 86, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@keyframes load {
  /* line 89, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    width: 0%;
  }

  /* line 91, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    width: 100%;
  }
}

@-webkit-keyframes spin {
  /* line 95, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 97, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-moz-keyframes spin {
  /* line 101, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 103, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@keyframes spin {
  /* line 107, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
  }

  /* line 109, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
  }
}

@-webkit-keyframes pulse {
  /* line 115, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 117, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@-moz-keyframes pulse {
  /* line 120, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 122, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@-o-keyframes pulse {
  /* line 125, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 127, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

@keyframes pulse {
  /* line 130, ../../app/assets/stylesheets/partials/_settings.css.sass */
  from {
    opacity: 1;
  }

  /* line 132, ../../app/assets/stylesheets/partials/_settings.css.sass */
  to {
    opacity: 0.25;
  }
}

/* line 5, ../../app/assets/stylesheets/partials/_base.css.sass */
html {
  background: url(//d3n3e0roqdrhcc.cloudfront.net/assets/bg-html-915211d8095672e2b45fe4718bd20fca.png) center 300px no-repeat #252b30;
  background-size: 111px 82px;
}
/* line 8, ../../app/assets/stylesheets/partials/_base.css.sass */
html.iframe {
  background: none;
}

/* line 61, ../../../../.gem/ruby/1.9.3/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/typography/_vertical_rhythm.scss */
* html {
  font-size: 112.5%;
}

/* line 64, ../../../../.gem/ruby/1.9.3/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/typography/_vertical_rhythm.scss */
html {
  font-size: 18px;
  line-height: 1.33333em;
}

/* line 13, ../../app/assets/stylesheets/partials/_base.css.sass */
body {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 31px;
  right: 0;
  background: #343b42;
  color: white;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  min-width: 650px;
  -webkit-font-smoothing: antialiased;
}
/* line 20, ../../app/assets/stylesheets/partials/_base.css.sass */
body.iframe {
  background: none;
  left: 20px;
  right: 20px;
}
@media screen and (min-width: 800px) {
  /* line 25, ../../app/assets/stylesheets/partials/_base.css.sass */
  body.is-expanded {
    left: 250px;
  }
}

/* line 30, ../../app/assets/stylesheets/partials/_base.css.sass */
h1, h2, h3, h4 {
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-weight: bold;
}

/* line 34, ../../app/assets/stylesheets/partials/_base.css.sass */
h1 {
  font-size: 3.61111em;
  line-height: 1.10769em;
  margin-top: 0.36923em;
  margin-bottom: 0.36923em;
  color: white;
  padding: 0 24px;
}

/* line 41, ../../app/assets/stylesheets/partials/_base.css.sass */
h2 {
  font-size: 2.22222em;
  line-height: 1.2em;
  margin-bottom: 0.096em;
  -webkit-transition: background 0.2s 0.2s;
  -webkit-transition-delay: ease-in-out;
  -moz-transition: background 0.2s 0.2s ease-in-out;
  -o-transition: background 0.2s 0.2s ease-in-out;
  transition: background 0.2s 0.2s ease-in-out;
}
/* line 45, ../../app/assets/stylesheets/partials/_base.css.sass */
h2 b {
  color: white;
}

/* line 48, ../../app/assets/stylesheets/partials/_base.css.sass */
h3 {
  font-size: 1.11111em;
  line-height: 1.2em;
}

/* line 51, ../../app/assets/stylesheets/partials/_base.css.sass */
h4 {
  font-size: 0.77778em;
  line-height: 1.71429em;
  color: white;
}

/* line 55, ../../app/assets/stylesheets/partials/_base.css.sass */
p {
  margin-bottom: 1.06667em;
}

/* line 58, ../../app/assets/stylesheets/partials/_base.css.sass */
pre {
  padding-top: 1.33333em;
  padding-bottom: 1.33333em;
  margin-bottom: 1.33333em;
  -webkit-transition: border-color 0.2s ease-in-out;
  -moz-transition: border-color 0.2s ease-in-out;
  -o-transition: border-color 0.2s ease-in-out;
  transition: border-color 0.2s ease-in-out;
  background: #e4dfdb;
  background: rgba(196, 65, 23, 0.35);
  border-color: #c44117;
  overflow-x: auto;
  padding-left: 24px;
  padding-right: 24px;
}
/* line 69, ../../app/assets/stylesheets/partials/_base.css.sass */
pre code {
  background: none;
  color: white;
  padding: 0;
}

/* line 74, ../../app/assets/stylesheets/partials/_base.css.sass */
img {
  max-width: 100%;
}

/* line 79, ../../app/assets/stylesheets/partials/_base.css.sass */
a {
  color: #a0cafe;
  text-decoration: none;
}
/* line 82, ../../app/assets/stylesheets/partials/_base.css.sass */
a:hover, a:focus {
  text-decoration: underline;
}

/* line 93, ../../app/assets/stylesheets/partials/_base.css.sass */
code {
  font-size: 0.83333em;
  line-height: 1.6em;
  font-family: Monaco, Courier, monospace;
  padding: 0 3px;
}

/* line 98, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs {
  background: #252b30;
  color: #a0cafe;
  cursor: pointer;
  padding: 2px 4px;
  position: relative;
}
/* line 105, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs:hover {
  color: white;
}
/* line 107, ../../app/assets/stylesheets/partials/_base.css.sass */
.docs:after {
  content: url(//d3n3e0roqdrhcc.cloudfront.net/assets/icn-link-f9744ae5a55101dcba73a424ffa97fd1.png);
  left: 2px;
  margin-right: 2px;
  position: relative;
  top: -5px;
}

/* line 114, ../../app/assets/stylesheets/partials/_base.css.sass */
em {
  font-style: italic;
}

/* line 117, ../../app/assets/stylesheets/partials/_base.css.sass */
strong {
  font-weight: bold;
}

/* line 120, ../../app/assets/stylesheets/partials/_base.css.sass */
::selection {
  background: #a0cafe;
  color: white;
}

/* line 124, ../../app/assets/stylesheets/partials/_base.css.sass */
::-moz-selection {
  background: #a0cafe;
  color: white;
}

/* line 130, ../../app/assets/stylesheets/partials/_base.css.sass */
.course {
  background: url(//d3n3e0roqdrhcc.cloudfront.net/assets/bg-body-e1bd71c8db06545b3f76eb77f49596c9.jpg) center top;
  color: white;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  min-height: 100%;
}

/* line 138, ../../app/assets/stylesheets/partials/_base.css.sass */
.split {
  padding-top: 2em;
  border-top: 1px solid rgba(148, 163, 172, 0.3);
}

/* line 143, ../../app/assets/stylesheets/partials/_base.css.sass */
.split-a,
.split-b {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  float: left;
  width: 45%;
}

/* line 149, ../../app/assets/stylesheets/partials/_base.css.sass */
.split-a {
  margin-right: 10%;
}

/* line 154, ../../app/assets/stylesheets/partials/_base.css.sass */
.btn {
  background: #4cb64f;
  border: 1px solid #081f09;
  color: black;
  cursor: pointer;
  display: block;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-size: 1.25em;
  font-weight: bold;
  line-height: 1;
  padding: 0.5em 24px 0.5em 24px;
  text-align: center;
  text-transform: uppercase;
}
/* line 167, ../../app/assets/stylesheets/partials/_base.css.sass */
.btn:hover, .btn:focus {
  background: #70c573;
  text-decoration: none;
}

/* line 174, ../../app/assets/stylesheets/partials/_base.css.sass */
.tsm {
  font-size: 1.66667em;
  line-height: 1.6em;
}

/* line 4, ../../app/assets/stylesheets/partials/_iframes.css.sass */
iframe {
  height: 70px;
}

/* line 11, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#exercise-110 .rendered iframe,
.lab-2 .rendered iframe,
.lab-3 .rendered iframe {
  height: 200px;
}

/* line 15, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h1 {
  font-size: 1.33333em;
  line-height: 1.5em;
  margin-top: 0em;
  padding: 0;
}
/* line 19, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h2 {
  font-size: 1em;
  line-height: 1.33333em;
  position: relative;
  top: 2px;
}
/* line 23, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe h3 {
  font-size: 0.88889em;
  line-height: 1.5em;
}
/* line 25, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe p {
  font-size: 0.77778em;
  line-height: 1.71429em;
}
/* line 27, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe button {
  font-size: 1em;
  line-height: 1.33333em;
  margin-top: 0.4em;
  margin-bottom: 0.4em;
  background: #4cb64f;
  border: 1px solid #081f09;
  color: black;
  cursor: pointer;
  display: block;
  font-family: KlavikaWeb, Helvetica, sans-serif;
  font-weight: bold;
  line-height: 1;
  padding: 5px 24px 3px 24px;
  text-transform: uppercase;
  width: 100%;
}
/* line 42, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe button:hover, .iframe button:focus {
  background: #70c573;
  text-decoration: none;
}
/* line 47, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe li span {
  font-size: 0.66667em;
  line-height: 2em;
}
@media screen and (min-width: 1024px) {
  /* line 47, ../../app/assets/stylesheets/partials/_iframes.css.sass */
  .iframe li span {
    font-size: 0.77778em;
    line-height: 1.71429em;
  }
}
/* line 51, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.iframe .details {
  font-size: 0.88889em;
  line-height: 1.5em;
  background: #82add8;
  border: 1px solid #191d20;
  bottom: 0.5em;
  color: #191d20;
  display: block;
  font-weight: bold;
  left: 0.5em;
  padding: 3px 0;
  right: 0.5em;
  text-align: center;
}

/* line 66, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations,
#tours {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  margin-top: 1.33333em;
}
/* line 70, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations:after,
#tours:after {
  content: ".";
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

/* line 77, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li,
#tours > li,
#tours > ul > li,
#all-tours ul li {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  background: rgba(37, 43, 48, 0.5);
  float: left;
  min-height: 6em;
  padding: 0.5em;
  position: relative;
  vertical-align: top;
  width: 22.75%;
}
/* line 89, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li h2,
#tours > li h2,
#tours > ul > li h2,
#all-tours ul li h2 {
  margin-bottom: 0.66667em;
}
/* line 91, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li + li,
#tours > li + li,
#tours > ul > li + li,
#all-tours ul li + li {
  margin-left: 3%;
}
/* line 93, ../../app/assets/stylesheets/partials/_iframes.css.sass */
#vacations > li.highlight,
#tours > li.highlight,
#tours > ul > li.highlight,
#all-tours ul li.highlight {
  background: rgba(88, 95, 99, 0.5);
}

/* line 95, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote {
  margin-right: -42px;
  position: absolute;
  right: 50%;
  top: 37px;
}
/* line 100, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote li {
  background: #3b454d;
  display: inline-block;
  min-height: 0;
  overflow: hidden;
  margin: 0 5px;
}
/* line 106, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote a {
  color: #4cb64f;
  padding: 4px 10px;
}
/* line 109, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote.highlight {
  background-color: #999999;
}
/* line 111, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote.highlight {
  background: #252b30;
}
/* line 113, ../../app/assets/stylesheets/partials/_iframes.css.sass */
.vote + li {
  margin-left: 5%;
}
@media screen and (min-width: 1170px) {
  /* line 95, ../../app/assets/stylesheets/partials/_iframes.css.sass */
  .vote {
    margin-right: 0;
    top: 10px;
    right: 3px;
  }
}

/* line 120, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour,
#tour,
#all-tours ul li {
  width: 24.25%;
}
/* line 124, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour p,
#tour p,
#all-tours ul li p {
  margin-bottom: 5px;
}
/* line 126, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour button,
#tour button,
#all-tours ul li button {
  font-size: 0.77778em;
  line-height: 1.28571em;
}
/* line 128, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour .photos,
#tour .photos,
#all-tours ul li .photos {
  display: none;
  position: absolute;
  left: 210px;
  top: 0;
}
/* line 133, ../../app/assets/stylesheets/partials/_iframes.css.sass */
div.tour .photos li,
#tour .photos li,
#all-tours ul li .photos li {
  float: left;
  position: relative;
  margin-left: 20px;
  max-width: 170px;
  background: #252b30;
  border: 1px solid #121415;
  padding: 5px 5px 0 5px;
  width: 26%;
}

jsbin.dovuquk.js

$(document).ready(function() {
  $('#tour').on('click', 'button', function() {
    $('.photos').slideToggle();
  });

  // create showPhotos() function
  function showPhotos(){
   $(this).find('span').slideToggle();
  }
  
  $('.photos').on('mouseenter', 'li', showPhotos);
  $('.photos').on('mouseleave', 'li', showPhotos);
  

});