<div class="wrapper preload">
  <section class="grid-unit top-left">
    <div class="swing-panel">
      <span class="desc">What does this guy think he is doing?</span>
    </div>
    <div class="sphere"></div>
    <span class="icon fa fa-book"></span>
    <span class="label">Documents</span>
  </section>
  <section class="grid-unit top-right">
    <div class="swing-panel">
      <span class="desc">This pen is the worst thing I have even seen!</span>
    </div>
        <div class="sphere"></div>
    <span class=" icon fa fa-user"></span>
    <span class="label">About Me</span>
  </section>
  <section class="grid-unit bottom-left">
    <div class="swing-panel">
      <span class="desc">Whatever, I'm going to get a beer!</span>
    </div>
        <div class="sphere"></div>
    <span class=" icon fa fa-gear"></span>
    <span class="label">Settings</span>
  </section>
  <section class="grid-unit bottom-right">
    <div class="swing-panel">
      <span class="desc">One does not simply animate panels.</span>
    </div>
        <div class="sphere"></div>
    <span class="icon fa fa-picture-o"></span>
    <span class="label">Gallery</span>
  </section>
</div><!-- end wrapper -->
@import url(https://fonts.googleapis.com/css?family=Oxygen);
@import url(http://weloveiconfonts.com/api/?family=entypo);

fa {
  font-family: 'FontAwesome';
}

* {
  box-sizing: border-box;
}

.preload * {
  transition: none !important;
}

html
{
  position: relative;
  min-height: 100%;
}

body {
  background: #fff;
}

body,
.wrapper{
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}

.grid-unit {
  position: relative;
  float: left;
  border-top: 10px solid #fff;
  border-left: 10px solid #fff;
  width: 50%;
  height: 50%;
  perspective: 800;
  overflow: hidden;
}

.top-left {
  background: rgba(236,208,120,1);
}

.top-right {
  background: rgba(217,91,67,1);
  border-right: 10px solid #fff;
}

.bottom-right {
  background: rgba(192,41,66,1);
  border-bottom: 10px solid #fff;
  border-right: 10px solid #fff;
}

.bottom-left {
  background: rgba(84,36,55,1);
  border-bottom: 10px solid #fff;
}

.swing-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%; 
  font-size: 2.5em;
  color: #fff;
  font-family: Oxygen, arial, sans-serif;
  transform-origin: left 50%;
  transform: rotateY(120deg);
  transition: transform .5s ease;
  letter-spacing: -.05em;
  text-shadow: 0 1px 0 rgba(0,0,0,.2);
}

.top-right .swing-panel,
.bottom-right .swing-panel{
  transform-origin: right 50%;
  transform: rotateY(-120deg);
}

.desc {
  display: block;
  position: absolute;
   padding: 5%;
}

.label {
  position: absolute;
  font-family: Oxygen, arial, sans-serif;
  color: #fff;
  font-size: 1.2em;
  opacity: 1;
  transition: opacity .5s ease;
}

.grid-unit:hover .label {
  opacity: 0;
}

.top-left .label {
  bottom: 100px;
  right: 80px;
  transform: rotate(45deg);
}

.top-right .label {
  bottom: 100px;
  left: 80px;
  transform: rotate(-45deg);
}

.bottom-left .label {
  top: 100px;
  right: 80px;
  transform: rotate(-45deg);
}

.bottom-right .label {
  top: 100px;
  left: 80px;
  transform: rotate(45deg);
}

.top-left .desc {
  top: 0;
  left: 0;
}

.top-right .desc {
  top: 0;
  right: 0;
}

.bottom-left .desc {
  bottom: 0;
  left: 0;
}

.bottom-right .desc {
  bottom: 0;
  right: 0;
}

.grid-unit:hover .swing-panel {
  transform: rotateY(0deg);
}

.sphere {
  position: absolute;
  width: 200px;
  height: 200px;
  background-color: rgba(255,255,255,1);
  border-radius: 500px;
  transition: background-color .25s ease;
  opacity: 1;
}

.top-left .sphere {
  right: -100px;
  bottom: -100px;
}

.top-right .sphere {
  left: -100px;
  bottom: -100px;
}

.bottom-right .sphere {
  left: -100px;
  top: -100px;
}

.bottom-left .sphere {
  right: -100px;
  top: -100px;
}

.grid-unit:hover .sphere {
  background-color: rgba(255,255,255,0);
}

.icon {
  position: absolute;
  font-size: 2em;
  transition: all .25s ease;
  z-index: 5;
}

.bottom-left .icon {
  top: 20px;
  right: 30px;
  color: rgba(84,36,55,1);
}

.bottom-right .icon {
  top: 20px;
  left: 22px;
  color: rgba(192,41,66,1);
}

.top-right .icon {
  bottom: 25px;
  left: 20px;
  color: rgba(217,91,67,1);
}

.top-left .icon {
  bottom: 25px;
  right: 35px;
  color: rgba(236,208,120,1);
}

.grid-unit:hover .icon {
  color: #fff;
  font-size: 4em;
}
jQuery(function(){

  $(window).load(function(){
  
  $('.wrapper').removeClass('preload');
  
  });

});

External CSS

  1. //maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css

External JavaScript

  1. //cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js