graduationPage.css

body{
  background-color:#ccc;
}
.nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
}
.nav div {
    float: left;
    width: 25%;
    width: calc(100%/4);
    list-style-type:none;
}
.nav div a{
    display: block;
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
    text-decoration: none;
    color: #fff;
    background:rgba(0,0,0,0.6);
    font-size: 13px;
    letter-spacing: 3px;
    transition:all 0.5s ease-in-out;
    transition:color 1s ease;
}
.nav div a:hover{
  color:#d00;
}

.stage{
    position: fixed;
    top: 0;
    left: 0;
    -webkit-perspective: 1000;
    -ms-perspective: 1000;
    -o-perspective: 1000;
    -moz-perspective: 1000px;
    perspective: 1000;
}

.cube {
    position: relative;
    margin:0 auto;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    transition:all 1s;
}

.cube div {
    position: absolute;
    color: #fff;
    text-align: center;
}
.cube_top {
    background-image:url("smilingDog.jpg");
    background-repeat:no-repeat;
    background-position:center center;
    background-size:cover;
    top: -50px;
    left: 0px;
    -webkit-transform: rotateX(90deg);
    transform: rotateX(90deg);
}
.cube_top>div{
    margin-top:100px;
    margin-left:50px;
    text-align:left;
    font-size:30px;
    text-shadow:1px 1px 1px rgba(0,0,0,0.9);
}

.cube_bottom {
    background-image:url("nightStreet.jpg");
    background-repeat:no-repeat;
    background-position:center center;
    background-size:cover;
    left: 0px;
    -webkit-transform: rotateX(-90deg);
    transform: rotateX(-90deg);
}
.cube_bottom div{
  margin-top:400px;
  margin-right:150px;
  text-align:right;
  font-size:50px;
  text-shadow:4px 4px 5px rgba(0,0,0,0.9);
}

.cube_front {
    background-color:#fff;
    background-image:url("waseda.jpg");
    background-repeat:no-repeat;
    background-position:center center;
    background-size:cover;
    top: 0px;
    left: 0px;
    color:#000;
}
.cube_front div{
  display:none;
  margin-top:200px;
  margin-left:50px;
  text-align:left;
  font-size:50px;
  text-shadow:4px 4px 5px rgba(0,0,0,0.9);
}

.cube_back {
    background-image:url("party.jpg");
    background-repeat:no-repeat;
    background-position:center center;
    background-size:cover;
    top: 0px;
    left: 0px;
}
.cube_back>div{
  margin-top:200px;
  font-size:60px;
  text-shadow:4px 4px 5px rgba(0,0,0,0.9);
}