hskang9/dennis-ritchie-tribute-page.markdown

## dennis-ritchie-tribute-page.markdown

      
    Raw
  

              dennis-ritchie-tribute-page.markdown
            
          
    Dennis Ritchie Tribute Page

A Pen by Hyungsuk on CodePen.
License.

  
## index.html
<html lang="en" class="no-js">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">

	<link href='http://fonts.googleapis.com/css?family=Droid+Serif|Open+Sans:400,700' rel='stylesheet' type='text/css'>

	<link rel="stylesheet" href="css/reset.css"> <!-- CSS reset -->
	<link rel="stylesheet" href="css/style.css"> <!-- Resource style -->
	<script src="js/modernizr.js"></script> <!-- Modernizr -->

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="js/main.js"></script> <!-- Resource jQuery -->

	<title>Dennis Ritchie</title>
</head>
<body>
	<div class="container">
	        <h1 class="text-center" style="color : black">Dennis Ritchie</h1>
					<h4 class="text-center"><em>Founder of C Programming Language and UNIX</em></h4>
  </div>
  <div class="container">
	        <div class="thumbnail">
            <div class="DN">
	          <img   src="http://randalljhoward.com/files/2011/12/DMR-vintage.jpg">
            </div>
	            <div class="caption text-center">Dennis Ritchie at work at Bell Laboratories, Murray Hill, NJ on an iconic CRT terminal. </div>
            </div>
</div>

	        <div>
	          <h1 style="color : black" class="text-center"> Here is the timeline of his life.</h3>
	          </div>
	<section id="cd-timeline" class="cd-container">
		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-picture">
				<img>

			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
        <p>Dennis Ritchie was born in Bronx-ville, New York.</p>
				<span class="cd-date">1941</span>
			</div> <!-- cd-timeline-content -->
		</div> <!-- cd-timeline-block -->

		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-movie">
				<img>
			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
				<p>He received a BS degree in Physics.</p>
				<span class="cd-date">1963</span>
			</div> <!-- cd-timeline-content -->
		</div> <!-- cd-timeline-block -->
		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-picture">
				<img>
			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
				<p>He joined Bell Laboratories Computing Sciences Research Center in Murray Hill, NJ with <a href="http://amturing.acm.org/award_winners/thompson_4588371.cfm">Ken Thompson</a>. Members of the group had been participating in the design and development of the Multics system, along with developers from MIT's Project MAC and General Electric</p>
				<span class="cd-date">1964</span>
			</div> <!-- cd-timeline-content -->
		</div> <!-- cd-timeline-block -->

		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-location">
				<img>
			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
        <p>He ported the programming language <a href="http://amturing.acm.org/info/ritchie_1506389.cfm#add_3">BCPL</a> from <a href="http://amturing.acm.org/info/ritchie_1506389.cfm#add_4">CTSS</a> to the Multics and <a href="http://amturing.acm.org/info/ritchie_1506389.cfm#add_5">GECOS</a> systems.</p>
				<span class="cd-date">1967</span>
			</div> <!-- cd-timeline-content -->
		</div> <!-- cd-timeline-block -->
		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-location">
				<img>
			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
              <p>Discovers the origin of the UNIX System. He wrote:
                <blockquote><em><p>It began in 1969 when Ken Thompson discovered a little-used PDP-7 computer and set out to fashion a computing environment that he liked. Thompson wrote the first version of Unix for a Digital Equipment Corporation PDP-7 in a month, using a cross-assembler that ran on GECOS. The PDP-7 he used had 4K of 18-bit words. His work soon attracted me; I joined in the enterprise, though most of the ideas, and most of the work for that matter, were his."
              </p></em>
                  <cite style = "font-size: 25px"> - Dennis Ritchie</cite>
                </blockquote>
              </p>
				<span class="cd-date">1969</span>
			</div> <!-- cd-timeline-content -->
		</div> <!-- cd-timeline-block -->
		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-movie">
				<img>
			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
        <p>He receives ACM A. M. Turing Award.</p>
				<span class="cd-date">1983</span>
			</div> <!-- cd-timeline-content -->
		</div> <!-- cd-timeline-block -->

		<div class="cd-timeline-block">
			<div class="cd-timeline-img cd-movie">
				<img>
			</div> <!-- cd-timeline-img -->

			<div class="cd-timeline-content">
				<p>He passes away.</p>
				<span class="cd-date">2011</span>
			</div> <!-- cd-timeline-content -->
            </div> <!-- cd-timeline-block --> </section><!-- cd-timeline -->
  <div class="center">
		    <p>"UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity."</p>
        <cite>Dennis Ritchie</cite>
  </div>

</body>
  <div class="footer">
  <h3 class="text-center">Written and Coded by Hyungsuk Kang</h3>
  </div>
</html>

## script.js
jQuery(document).ready(function($){
	var timelineBlocks = $('.cd-timeline-block'),
		offset = 0.8;

	//hide timeline blocks which are outside the viewport
	hideBlocks(timelineBlocks, offset);

	//on scolling, show/animate timeline blocks when enter the viewport
	$(window).on('scroll', function(){
		(!window.requestAnimationFrame)
			? setTimeout(function(){ showBlocks(timelineBlocks, offset); }, 100)
			: window.requestAnimationFrame(function(){ showBlocks(timelineBlocks, offset); });
	});

	function hideBlocks(blocks, offset) {
		blocks.each(function(){
			( $(this).offset().top > $(window).scrollTop()+$(window).height()*offset ) && $(this).find('.cd-timeline-img, .cd-timeline-content').addClass('is-hidden');
		});
	}

	function showBlocks(blocks, offset) {
		blocks.each(function(){
			( $(this).offset().top <= $(window).scrollTop()+$(window).height()*offset && $(this).find('.cd-timeline-img').hasClass('is-hidden') ) && $(this).find('.cd-timeline-img, .cd-timeline-content').removeClass('is-hidden').addClass('bounce-in');
		});
	}
});

## scripts
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>

## style.css
/* --------------------------------

Primary style

-------------------------------- */
html * {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

*, *:after, *:before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  font-size: 100%;
  font-family: "Droid Serif", serif;
  color: #7f8c97;
  background-color: #e9f0f5;
}

a {
  color: #acb7c0;
  text-decoration: none;
  font-family: "Open Sans", sans-serif;
}

img {
  max-width: 100%;
}

.thumbnail{
  width: 1000px;
  height: 500px;
  margin-left: 70px;
}

.DN{
  margin-top: 70px;
  margin-left: 300px;
}

.caption{
  margin-top: 10px;
  font-size: 20px;
}


h1, h2 {
  font-family: "Open Sans", sans-serif;
  font-weight: bold;
}

.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.footer {
  margin-top: 20px;
}
/* --------------------------------

Modules - reusable parts of our design

-------------------------------- */
.cd-container {
  /* this class is used to give a max-width to the element it is applied to, and center it horizontally when it reaches that max-width */
  width: 90%;
  max-width: 1170px;
  margin: 0 auto;
}
.cd-container::after {
  /* clearfix */
  content: '';
  display: table;
  clear: both;
}

/* --------------------------------

Main components

-------------------------------- */
header {
  height: 200px;
  line-height: 200px;
  text-align: center;
  background: #303e49;
}
header h1 {
  color: white;
  font-size: 18px;
  font-size: 1.125rem;
}
@media only screen and (min-width: 1170px) {
  header {
    height: 300px;
    line-height: 300px;
  }
  header h1 {
    font-size: 24px;
    font-size: 1.5rem;
  }
}

#cd-timeline {
  position: relative;
  padding: 2em 0;
  margin-top: 2em;
  margin-bottom: 2em;
}
#cd-timeline::before {
  /* this is the vertical line */
  content: '';
  position: absolute;
  top: 0;
  left: 18px;
  height: 100%;
  width: 4px;
  background: #d7e4ed;
}
@media only screen and (min-width: 1170px) {
  #cd-timeline {
    margin-top: 3em;
    margin-bottom: 3em;
  }
  #cd-timeline::before {
    left: 50%;
    margin-left: -2px;
  }
}

.cd-timeline-block {
  position: relative;
  margin: 2em 0;
}
.cd-timeline-block:after {
  content: "";
  display: table;
  clear: both;
}
.cd-timeline-block:first-child {
  margin-top: 0;
}
.cd-timeline-block:last-child {
  margin-bottom: 0;
}
@media only screen and (min-width: 1170px) {
  .cd-timeline-block {
    margin: 4em 0;
  }
  .cd-timeline-block:first-child {
    margin-top: 0;
  }
  .cd-timeline-block:last-child {
    margin-bottom: 0;
  }
}

 .cd-timeline-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: 0 0 0 4px white, inset 0 2px 0 rgba(0, 0, 0, 0.08), 0 3px 0 4px rgba(0, 0, 0, 0.05);
}

 .cd-timeline-img img {
  display: block;
  width: 48px;
  height: 48px;
  position: relative;
  left: 30%;
  top: 30%;
  margin-left: -12px;
  margin-top: -12px;
  content:url("http://bit.ly/2fbySgJ");
}
.cd-timeline-img.cd-picture {
  background: #75ce66;
}
.cd-timeline-img.cd-movie {
  background: #c03b44;
}
.cd-timeline-img.cd-location {
  background: #f0ca45;
}
@media only screen and (min-width: 1170px) {
  .cd-timeline-img {
    width: 60px;
    height: 60px;
    left: 50%;
    margin-left: -30px;
    /* Force Hardware Acceleration in WebKit */
    -webkit-transform: translateZ(0);
    -webkit-backface-visibility: hidden;
  }
  .cssanimations .cd-timeline-img.is-hidden {
    visibility: hidden;
  }
  .cssanimations .cd-timeline-img.bounce-in {
    visibility: visible;
    -webkit-animation: cd-bounce-1 0.6s;
    -moz-animation: cd-bounce-1 0.6s;
    animation: cd-bounce-1 0.6s;
  }
}

@-webkit-keyframes cd-bounce-1 {
  0% {
    opacity: 0;
    -webkit-transform: scale(0.5);
  }

  60% {
    opacity: 1;
    -webkit-transform: scale(1.2);
  }

  100% {
    -webkit-transform: scale(1);
  }
}
@-moz-keyframes cd-bounce-1 {
  0% {
    opacity: 0;
    -moz-transform: scale(0.5);
  }

  60% {
    opacity: 1;
    -moz-transform: scale(1.2);
  }

  100% {
    -moz-transform: scale(1);
  }
}
@keyframes cd-bounce-1 {
  0% {
    opacity: 0;
    -webkit-transform: scale(0.5);
    -moz-transform: scale(0.5);
    -ms-transform: scale(0.5);
    -o-transform: scale(0.5);
    transform: scale(0.5);
  }

  60% {
    opacity: 1;
    -webkit-transform: scale(1.2);
    -moz-transform: scale(1.2);
    -ms-transform: scale(1.2);
    -o-transform: scale(1.2);
    transform: scale(1.2);
  }

  100% {
    -webkit-transform: scale(1);
    -moz-transform: scale(1);
    -ms-transform: scale(1);
    -o-transform: scale(1);
    transform: scale(1);
  }
}
.cd-timeline-content {
  position: relative;
  margin-left: 60px;
  background: white;
  border-radius: 0.25em;
  padding: 1em;
  box-shadow: 0 3px 0 #d7e4ed;
}
.cd-timeline-content:after {
  content: "";
  display: table;
  clear: both;
}
.cd-timeline-content h2 {
  color: #303e49;
}
.cd-timeline-content p, .cd-timeline-content .cd-read-more, .cd-timeline-content .cd-date {
  font-size: 13px;
  font-size: 0.8125rem;
}
.cd-timeline-content .cd-read-more, .cd-timeline-content .cd-date {
  display: inline-block;
}
.cd-timeline-content p {
  margin: 1em 0;
  line-height: 1.6;
}
.cd-timeline-content .cd-read-more {
  float: right;
  padding: .8em 1em;
  background: #acb7c0;
  color: white;
  border-radius: 0.25em;
}
.no-touch .cd-timeline-content .cd-read-more:hover {
  background-color: #bac4cb;
}
.cd-timeline-content .cd-date {
  float: left;
  padding: .8em 0;
  opacity: .7;
}
.cd-timeline-content::before {
  content: '';
  position: absolute;
  top: 16px;
  right: 100%;
  height: 0;
  width: 0;
  border: 7px solid transparent;
  border-right: 7px solid white;
}
@media only screen and (min-width: 768px) {
  .cd-timeline-content h2 {
    font-size: 20px;
    font-size: 1.25rem;
  }
  .cd-timeline-content p {
    font-size: 2rem;
  }
  .cd-timeline-content , .cd-timeline-content .cd-date {
    font-size: 14px;
    font-size: 0.875rem;
  }
}
@media only screen and (min-width: 1170px) {
  .cd-timeline-content {
    margin-left: 0;
    padding: 1.6em;
    width: 45%;
  }
  .cd-timeline-content::before {
    top: 24px;
    left: 100%;
    border-color: transparent;
    border-left-color: white;
  }
  .cd-timeline-content .cd-read-more {
    float: left;
  }
  .cd-timeline-content .cd-date {
    position: absolute;
    width: 100%;
    left: 122%;
    top: 6px;
    font-size: 16px;
    font-size: 1rem;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content {
    float: right;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content::before {
    top: 24px;
    left: auto;
    right: 100%;
    border-color: transparent;
    border-right-color: white;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content .cd-read-more {
    float: right;
  }
  .cd-timeline-block:nth-child(even) .cd-timeline-content .cd-date {
    left: auto;
    right: 122%;
    text-align: right;
  }
  .cssanimations .cd-timeline-content.is-hidden {
    visibility: hidden;
  }
  .cssanimations .cd-timeline-content.bounce-in {
    visibility: visible;
    -webkit-animation: cd-bounce-2 0.6s;
    -moz-animation: cd-bounce-2 0.6s;
    animation: cd-bounce-2 0.6s;
  }
}

@media only screen and (min-width: 1170px) {
  /* inverse bounce effect on even content blocks */
  .cssanimations .cd-timeline-block:nth-child(even) .cd-timeline-content.bounce-in {
    -webkit-animation: cd-bounce-2-inverse 0.6s;
    -moz-animation: cd-bounce-2-inverse 0.6s;
    animation: cd-bounce-2-inverse 0.6s;
  }
}
@-webkit-keyframes cd-bounce-2 {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-100px);
  }

  60% {
    opacity: 1;
    -webkit-transform: translateX(20px);
  }

  100% {
    -webkit-transform: translateX(0);
  }
}
@-moz-keyframes cd-bounce-2 {
  0% {
    opacity: 0;
    -moz-transform: translateX(-100px);
  }

  60% {
    opacity: 1;
    -moz-transform: translateX(20px);
  }

  100% {
    -moz-transform: translateX(0);
  }
}
@keyframes cd-bounce-2 {
  0% {
    opacity: 0;
    -webkit-transform: translateX(-100px);
    -moz-transform: translateX(-100px);
    -ms-transform: translateX(-100px);
    -o-transform: translateX(-100px);
    transform: translateX(-100px);
  }

  60% {
    opacity: 1;
    -webkit-transform: translateX(20px);
    -moz-transform: translateX(20px);
    -ms-transform: translateX(20px);
    -o-transform: translateX(20px);
    transform: translateX(20px);
  }

  100% {
    -webkit-transform: translateX(0);
    -moz-transform: translateX(0);
    -ms-transform: translateX(0);
    -o-transform: translateX(0);
    transform: translateX(0);
  }
}
@-webkit-keyframes cd-bounce-2-inverse {
  0% {
    opacity: 0;
    -webkit-transform: translateX(100px);
  }

  60% {
    opacity: 1;
    -webkit-transform: translateX(-20px);
  }

  100% {
    -webkit-transform: translateX(0);
  }
}
@-moz-keyframes cd-bounce-2-inverse {
  0% {
    opacity: 0;
    -moz-transform: translateX(100px);
  }

  60% {
    opacity: 1;
    -moz-transform: translateX(-20px);
  }

  100% {
    -moz-transform: translateX(0);
  }
}
@keyframes cd-bounce-2-inverse {
  0% {
    opacity: 0;
    -webkit-transform: translateX(100px);
    -moz-transform: translateX(100px);
    -ms-transform: translateX(100px);
    -o-transform: translateX(100px);
    transform: translateX(100px);
  }

  60% {
    opacity: 1;
    -webkit-transform: translateX(-20px);
    -moz-transform: translateX(-20px);
    -ms-transform: translateX(-20px);
    -o-transform: translateX(-20px);
    transform: translateX(-20px);
  }

  100% {
    -webkit-transform: translateX(0);
    -moz-transform: translateX(0);
    -ms-transform: translateX(0);
    -o-transform: translateX(0);
    transform: translateX(0);
  }
}

## styles
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/foundation/6.2.3/foundation.min.css" rel="stylesheet" />
<link href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css" rel="stylesheet" />
	<html lang="en" class="no-js">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">

	<link href='http://fonts.googleapis.com/css?family=Droid+Serif\|Open+Sans:400,700' rel='stylesheet' type='text/css'>

	<link rel="stylesheet" href="css/reset.css"> <!-- CSS reset -->
	<link rel="stylesheet" href="css/style.css"> <!-- Resource style -->
	<script src="js/modernizr.js"></script> <!-- Modernizr -->

	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
	<script src="js/main.js"></script> <!-- Resource jQuery -->

	<title>Dennis Ritchie</title>
	</head>
	<body>
	<div class="container">
	<h1 class="text-center" style="color : black">Dennis Ritchie</h1>
	<h4 class="text-center"><em>Founder of C Programming Language and UNIX</em></h4>
	</div>
	<div class="container">
	<div class="thumbnail">
	<div class="DN">
	<img src="http://randalljhoward.com/files/2011/12/DMR-vintage.jpg">
	</div>
	<div class="caption text-center">Dennis Ritchie at work at Bell Laboratories, Murray Hill, NJ on an iconic CRT terminal. </div>
	</div>
	</div>

	<div>
	<h1 style="color : black" class="text-center"> Here is the timeline of his life.</h3>
	</div>
	<section id="cd-timeline" class="cd-container">
	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-picture">
	<img>

	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>Dennis Ritchie was born in Bronx-ville, New York.</p>
	<span class="cd-date">1941</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block -->

	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-movie">
	<img>
	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>He received a BS degree in Physics.</p>
	<span class="cd-date">1963</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block -->
	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-picture">
	<img>
	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>He joined Bell Laboratories Computing Sciences Research Center in Murray Hill, NJ with <a href="http://amturing.acm.org/award_winners/thompson_4588371.cfm">Ken Thompson</a>. Members of the group had been participating in the design and development of the Multics system, along with developers from MIT's Project MAC and General Electric</p>
	<span class="cd-date">1964</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block -->

	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-location">
	<img>
	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>He ported the programming language <a href="http://amturing.acm.org/info/ritchie_1506389.cfm#add_3">BCPL</a> from <a href="http://amturing.acm.org/info/ritchie_1506389.cfm#add_4">CTSS</a> to the Multics and <a href="http://amturing.acm.org/info/ritchie_1506389.cfm#add_5">GECOS</a> systems.</p>
	<span class="cd-date">1967</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block -->
	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-location">
	<img>
	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>Discovers the origin of the UNIX System. He wrote:
	<blockquote><em><p>It began in 1969 when Ken Thompson discovered a little-used PDP-7 computer and set out to fashion a computing environment that he liked. Thompson wrote the first version of Unix for a Digital Equipment Corporation PDP-7 in a month, using a cross-assembler that ran on GECOS. The PDP-7 he used had 4K of 18-bit words. His work soon attracted me; I joined in the enterprise, though most of the ideas, and most of the work for that matter, were his."
	</p></em>
	<cite style = "font-size: 25px"> - Dennis Ritchie</cite>
	</blockquote>
	</p>
	<span class="cd-date">1969</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block -->
	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-movie">
	<img>
	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>He receives ACM A. M. Turing Award.</p>
	<span class="cd-date">1983</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block -->

	<div class="cd-timeline-block">
	<div class="cd-timeline-img cd-movie">
	<img>
	</div> <!-- cd-timeline-img -->

	<div class="cd-timeline-content">
	<p>He passes away.</p>
	<span class="cd-date">2011</span>
	</div> <!-- cd-timeline-content -->
	</div> <!-- cd-timeline-block --> </section><!-- cd-timeline -->
	<div class="center">
	<p>"UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity."</p>
	<cite>Dennis Ritchie</cite>
	</div>

	</body>
	<div class="footer">
	<h3 class="text-center">Written and Coded by Hyungsuk Kang</h3>
	</div>
	</html>
	jQuery(document).ready(function($){
	var timelineBlocks = $('.cd-timeline-block'),
	offset = 0.8;

	//hide timeline blocks which are outside the viewport
	hideBlocks(timelineBlocks, offset);

	//on scolling, show/animate timeline blocks when enter the viewport
	$(window).on('scroll', function(){
	(!window.requestAnimationFrame)
	? setTimeout(function(){ showBlocks(timelineBlocks, offset); }, 100)
	: window.requestAnimationFrame(function(){ showBlocks(timelineBlocks, offset); });
	});

	function hideBlocks(blocks, offset) {
	blocks.each(function(){
	( $(this).offset().top > $(window).scrollTop()+$(window).height()*offset ) && $(this).find('.cd-timeline-img, .cd-timeline-content').addClass('is-hidden');
	});
	}

	function showBlocks(blocks, offset) {
	blocks.each(function(){
	( $(this).offset().top <= $(window).scrollTop()+$(window).height()*offset && $(this).find('.cd-timeline-img').hasClass('is-hidden') ) && $(this).find('.cd-timeline-img, .cd-timeline-content').removeClass('is-hidden').addClass('bounce-in');
	});
	}
	});
	<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.8.3/modernizr.min.js"></script>
	/* --------------------------------

	Primary style

	-------------------------------- */
	html * {
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	}

	, :after, *:before {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
	}

	body {
	font-size: 100%;
	font-family: "Droid Serif", serif;
	color: #7f8c97;
	background-color: #e9f0f5;
	}

	a {
	color: #acb7c0;
	text-decoration: none;
	font-family: "Open Sans", sans-serif;
	}

	img {
	max-width: 100%;
	}

	.thumbnail{
	width: 1000px;
	height: 500px;
	margin-left: 70px;
	}

	.DN{
	margin-top: 70px;
	margin-left: 300px;
	}

	.caption{
	margin-top: 10px;
	font-size: 20px;
	}


	h1, h2 {
	font-family: "Open Sans", sans-serif;
	font-weight: bold;
	}

	.center {
	margin-left: auto;
	margin-right: auto;
	text-align: center;
	}

	.footer {
	margin-top: 20px;
	}
	/* --------------------------------

	Modules - reusable parts of our design

	-------------------------------- */
	.cd-container {
	/* this class is used to give a max-width to the element it is applied to, and center it horizontally when it reaches that max-width */
	width: 90%;
	max-width: 1170px;
	margin: 0 auto;
	}
	.cd-container::after {
	/* clearfix */
	content: '';
	display: table;
	clear: both;
	}

	/* --------------------------------

	Main components

	-------------------------------- */
	header {
	height: 200px;
	line-height: 200px;
	text-align: center;
	background: #303e49;
	}
	header h1 {
	color: white;
	font-size: 18px;
	font-size: 1.125rem;
	}
	@media only screen and (min-width: 1170px) {
	header {
	height: 300px;
	line-height: 300px;
	}
	header h1 {
	font-size: 24px;
	font-size: 1.5rem;
	}
	}

	#cd-timeline {
	position: relative;
	padding: 2em 0;
	margin-top: 2em;
	margin-bottom: 2em;
	}
	#cd-timeline::before {
	/* this is the vertical line */
	content: '';
	position: absolute;
	top: 0;
	left: 18px;
	height: 100%;
	width: 4px;
	background: #d7e4ed;
	}
	@media only screen and (min-width: 1170px) {
	#cd-timeline {
	margin-top: 3em;
	margin-bottom: 3em;
	}
	#cd-timeline::before {
	left: 50%;
	margin-left: -2px;
	}
	}

	.cd-timeline-block {
	position: relative;
	margin: 2em 0;
	}
	.cd-timeline-block:after {
	content: "";
	display: table;
	clear: both;
	}
	.cd-timeline-block:first-child {
	margin-top: 0;
	}
	.cd-timeline-block:last-child {
	margin-bottom: 0;
	}
	@media only screen and (min-width: 1170px) {
	.cd-timeline-block {
	margin: 4em 0;
	}
	.cd-timeline-block:first-child {
	margin-top: 0;
	}
	.cd-timeline-block:last-child {
	margin-bottom: 0;
	}
	}

	.cd-timeline-img {
	position: absolute;
	top: 0;
	left: 0;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	box-shadow: 0 0 0 4px white, inset 0 2px 0 rgba(0, 0, 0, 0.08), 0 3px 0 4px rgba(0, 0, 0, 0.05);
	}

	.cd-timeline-img img {
	display: block;
	width: 48px;
	height: 48px;
	position: relative;
	left: 30%;
	top: 30%;
	margin-left: -12px;
	margin-top: -12px;
	content:url("http://bit.ly/2fbySgJ");
	}
	.cd-timeline-img.cd-picture {
	background: #75ce66;
	}
	.cd-timeline-img.cd-movie {
	background: #c03b44;
	}
	.cd-timeline-img.cd-location {
	background: #f0ca45;
	}
	@media only screen and (min-width: 1170px) {
	.cd-timeline-img {
	width: 60px;
	height: 60px;
	left: 50%;
	margin-left: -30px;
	/* Force Hardware Acceleration in WebKit */
	-webkit-transform: translateZ(0);
	-webkit-backface-visibility: hidden;
	}
	.cssanimations .cd-timeline-img.is-hidden {
	visibility: hidden;
	}
	.cssanimations .cd-timeline-img.bounce-in {
	visibility: visible;
	-webkit-animation: cd-bounce-1 0.6s;
	-moz-animation: cd-bounce-1 0.6s;
	animation: cd-bounce-1 0.6s;
	}
	}

	@-webkit-keyframes cd-bounce-1 {
	0% {
	opacity: 0;
	-webkit-transform: scale(0.5);
	}

	60% {
	opacity: 1;
	-webkit-transform: scale(1.2);
	}

	100% {
	-webkit-transform: scale(1);
	}
	}
	@-moz-keyframes cd-bounce-1 {
	0% {
	opacity: 0;
	-moz-transform: scale(0.5);
	}

	60% {
	opacity: 1;
	-moz-transform: scale(1.2);
	}

	100% {
	-moz-transform: scale(1);
	}
	}
	@keyframes cd-bounce-1 {
	0% {
	opacity: 0;
	-webkit-transform: scale(0.5);
	-moz-transform: scale(0.5);
	-ms-transform: scale(0.5);
	-o-transform: scale(0.5);
	transform: scale(0.5);
	}

	60% {
	opacity: 1;
	-webkit-transform: scale(1.2);
	-moz-transform: scale(1.2);
	-ms-transform: scale(1.2);
	-o-transform: scale(1.2);
	transform: scale(1.2);
	}

	100% {
	-webkit-transform: scale(1);
	-moz-transform: scale(1);
	-ms-transform: scale(1);
	-o-transform: scale(1);
	transform: scale(1);
	}
	}
	.cd-timeline-content {
	position: relative;
	margin-left: 60px;
	background: white;
	border-radius: 0.25em;
	padding: 1em;
	box-shadow: 0 3px 0 #d7e4ed;
	}
	.cd-timeline-content:after {
	content: "";
	display: table;
	clear: both;
	}
	.cd-timeline-content h2 {
	color: #303e49;
	}
	.cd-timeline-content p, .cd-timeline-content .cd-read-more, .cd-timeline-content .cd-date {
	font-size: 13px;
	font-size: 0.8125rem;
	}
	.cd-timeline-content .cd-read-more, .cd-timeline-content .cd-date {
	display: inline-block;
	}
	.cd-timeline-content p {
	margin: 1em 0;
	line-height: 1.6;
	}
	.cd-timeline-content .cd-read-more {
	float: right;
	padding: .8em 1em;
	background: #acb7c0;
	color: white;
	border-radius: 0.25em;
	}
	.no-touch .cd-timeline-content .cd-read-more:hover {
	background-color: #bac4cb;
	}
	.cd-timeline-content .cd-date {
	float: left;
	padding: .8em 0;
	opacity: .7;
	}
	.cd-timeline-content::before {
	content: '';
	position: absolute;
	top: 16px;
	right: 100%;
	height: 0;
	width: 0;
	border: 7px solid transparent;
	border-right: 7px solid white;
	}
	@media only screen and (min-width: 768px) {
	.cd-timeline-content h2 {
	font-size: 20px;
	font-size: 1.25rem;
	}
	.cd-timeline-content p {
	font-size: 2rem;
	}
	.cd-timeline-content , .cd-timeline-content .cd-date {
	font-size: 14px;
	font-size: 0.875rem;
	}
	}
	@media only screen and (min-width: 1170px) {
	.cd-timeline-content {
	margin-left: 0;
	padding: 1.6em;
	width: 45%;
	}
	.cd-timeline-content::before {
	top: 24px;
	left: 100%;
	border-color: transparent;
	border-left-color: white;
	}
	.cd-timeline-content .cd-read-more {
	float: left;
	}
	.cd-timeline-content .cd-date {
	position: absolute;
	width: 100%;
	left: 122%;
	top: 6px;
	font-size: 16px;
	font-size: 1rem;
	}
	.cd-timeline-block:nth-child(even) .cd-timeline-content {
	float: right;
	}
	.cd-timeline-block:nth-child(even) .cd-timeline-content::before {
	top: 24px;
	left: auto;
	right: 100%;
	border-color: transparent;
	border-right-color: white;
	}
	.cd-timeline-block:nth-child(even) .cd-timeline-content .cd-read-more {
	float: right;
	}
	.cd-timeline-block:nth-child(even) .cd-timeline-content .cd-date {
	left: auto;
	right: 122%;
	text-align: right;
	}
	.cssanimations .cd-timeline-content.is-hidden {
	visibility: hidden;
	}
	.cssanimations .cd-timeline-content.bounce-in {
	visibility: visible;
	-webkit-animation: cd-bounce-2 0.6s;
	-moz-animation: cd-bounce-2 0.6s;
	animation: cd-bounce-2 0.6s;
	}
	}

	@media only screen and (min-width: 1170px) {
	/* inverse bounce effect on even content blocks */
	.cssanimations .cd-timeline-block:nth-child(even) .cd-timeline-content.bounce-in {
	-webkit-animation: cd-bounce-2-inverse 0.6s;
	-moz-animation: cd-bounce-2-inverse 0.6s;
	animation: cd-bounce-2-inverse 0.6s;
	}
	}
	@-webkit-keyframes cd-bounce-2 {
	0% {
	opacity: 0;
	-webkit-transform: translateX(-100px);
	}

	60% {
	opacity: 1;
	-webkit-transform: translateX(20px);
	}

	100% {
	-webkit-transform: translateX(0);
	}
	}
	@-moz-keyframes cd-bounce-2 {
	0% {
	opacity: 0;
	-moz-transform: translateX(-100px);
	}

	60% {
	opacity: 1;
	-moz-transform: translateX(20px);
	}

	100% {
	-moz-transform: translateX(0);
	}
	}
	@keyframes cd-bounce-2 {
	0% {
	opacity: 0;
	-webkit-transform: translateX(-100px);
	-moz-transform: translateX(-100px);
	-ms-transform: translateX(-100px);
	-o-transform: translateX(-100px);
	transform: translateX(-100px);
	}

	60% {
	opacity: 1;
	-webkit-transform: translateX(20px);
	-moz-transform: translateX(20px);
	-ms-transform: translateX(20px);
	-o-transform: translateX(20px);
	transform: translateX(20px);
	}

	100% {
	-webkit-transform: translateX(0);
	-moz-transform: translateX(0);
	-ms-transform: translateX(0);
	-o-transform: translateX(0);
	transform: translateX(0);
	}
	}
	@-webkit-keyframes cd-bounce-2-inverse {
	0% {
	opacity: 0;
	-webkit-transform: translateX(100px);
	}

	60% {
	opacity: 1;
	-webkit-transform: translateX(-20px);
	}

	100% {
	-webkit-transform: translateX(0);
	}
	}
	@-moz-keyframes cd-bounce-2-inverse {
	0% {
	opacity: 0;
	-moz-transform: translateX(100px);
	}

	60% {
	opacity: 1;
	-moz-transform: translateX(-20px);
	}

	100% {
	-moz-transform: translateX(0);
	}
	}
	@keyframes cd-bounce-2-inverse {
	0% {
	opacity: 0;
	-webkit-transform: translateX(100px);
	-moz-transform: translateX(100px);
	-ms-transform: translateX(100px);
	-o-transform: translateX(100px);
	transform: translateX(100px);
	}

	60% {
	opacity: 1;
	-webkit-transform: translateX(-20px);
	-moz-transform: translateX(-20px);
	-ms-transform: translateX(-20px);
	-o-transform: translateX(-20px);
	transform: translateX(-20px);
	}

	100% {
	-webkit-transform: translateX(0);
	-moz-transform: translateX(0);
	-ms-transform: translateX(0);
	-o-transform: translateX(0);
	transform: translateX(0);
	}
	}
	<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
	<link href="https://cdnjs.cloudflare.com/ajax/libs/foundation/6.2.3/foundation.min.css" rel="stylesheet" />
	<link href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.5.2/animate.min.css" rel="stylesheet" />