panduro.html

HTML

<nav class="mobile">
  <button>Toggle</button>
  <div>
    <a href="#">Mobile 1</a>
    <a href="#">Mobile 2</a>
    <a href="#">Mobile 3</a>
    <a href="#">Mobile 4</a>
  </div>
</nav>

CSS

html
  height: 2000px;

.mobile
  display: none;
  position: fixed;
  width: 100%;
  top: 0;
  div
    display: none;
  button
    position: absolute;
    top: 15px;
    right: 15px;
    border: 0;
    text-indent: 200%;
    overflow: hidden;
    background: rgba(255,255,255,.8) url(http://i.imgur.com/vKRaKDX.png) center no-repeat;
    border: 1px solid #ddd;
    border-radius: 3px;
    background-size: 80%;
    width: 30px;
    height: 30px;
    outline: none;
    transition: all 400ms ease;
    &.expanded
      transform: rotate(90deg);
      background-color: transparent;
      border: 0;
  a
    display: block;

a
  background: #eee;
  text-align: center;
  padding: 20px 0;
  border-bottom: 1px solid #ddd;
  text-decoration: none;
  color: #222;
  font-weight: bold;
  &:hover, &:active, &:focus
    background: darken(#eee, 3%);

.desktop
  display: block;
  overflow: hidden;
  a
    width: 25%;
    float: left;
    border-right: 1px solid #ddd;
    box-sizing: border-box;
    &:last-child
      border-right: none;

article
  padding: 0 30px 15px;


@media (max-width: 800px)
  .mobile
    display: block;


JS

html
  height: 2000px;

.mobile
  display: none;
  position: fixed;
  width: 100%;
  top: 0;
  div
    display: none;
  button
    position: absolute;
    top: 15px;
    right: 15px;
    border: 0;
    text-indent: 200%;
    overflow: hidden;
    background: rgba(255,255,255,.8) url(http://i.imgur.com/vKRaKDX.png) center no-repeat;
    border: 1px solid #ddd;
    border-radius: 3px;
    background-size: 80%;
    width: 30px;
    height: 30px;
    outline: none;
    transition: all 400ms ease;
    &.expanded
      transform: rotate(90deg);
      background-color: transparent;
      border: 0;
  a
    display: block;

a
  background: #eee;
  text-align: center;
  padding: 20px 0;
  border-bottom: 1px solid #ddd;
  text-decoration: none;
  color: #222;
  font-weight: bold;
  &:hover, &:active, &:focus
    background: darken(#eee, 3%);

.desktop
  display: block;
  overflow: hidden;
  a
    width: 25%;
    float: left;
    border-right: 1px solid #ddd;
    box-sizing: border-box;
    &:last-child
      border-right: none;

article
  padding: 0 30px 15px;


@media (max-width: 800px)
  .mobile
    display: block;