<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<body>
<div class="sky">
<div class="moon"></div>
<div class="clouds_one"></div>
<div class="clouds_two"></div>
<div class="clouds_three"></div>
</div>
</body>
.sky {
height: 480px;
background: #007fd5;
position: relative;
overflow: hidden;
-webkit-animation: sky_background 50s ease-out infinite;
-moz-animation: sky_background 50s ease-out infinite;
-o-animation: sky_background 50s ease-out infinite;
-webkit-transform: translate3d(0, 0, 0);
-moz-transform: translate3d(0, 0, 0);
-o-transform: translate3d(0, 0, 0)
}
.moon {
background: url("http://montanaflynn.me/lab/css-clouds/images/moon.png");
position: absolute;
left: 0;
height: 100%;
width: 300%;
-webkit-animation: moon 50s linear infinite;
-moz-animation: moon 50s linear infinite;
-o-animation: moon 50s linear infinite;
-webkit-transform: translate3d(0, 0, 0);
-moz-transform: translate3d(0, 0, 0);
-o-transform: translate3d(0, 0, 0)
}
.clouds_one {
background: url("http://montanaflynn.me/lab/css-clouds/images/cloud_one.png");
position: absolute;
left: 0;
top: 0;
height: 100%;
width: 300%;
-webkit-animation: cloud_one 50s linear infinite;
-moz-animation: cloud_one 50s linear infinite;
-o-animation: cloud_one 50s linear infinite;
-webkit-transform: translate3d(0, 0, 0);
-moz-transform: translate3d(0, 0, 0);
-o-transform: translate3d(0, 0, 0)
}
.clouds_two {
background: url("http://montanaflynn.me/lab/css-clouds/images/cloud_two.png");
position: absolute;
left: 0;
top: 0;
height: 100%;
width: 300%;
-webkit-animation: cloud_two 75s linear infinite;
-moz-animation: cloud_two 75s linear infinite;
-o-animation: cloud_two 75s linear infinite;
-webkit-transform: translate3d(0, 0, 0);
-moz-transform: translate3d(0, 0, 0);
-o-transform: translate3d(0, 0, 0)
}
.clouds_three {
background: url("http://montanaflynn.me/lab/css-clouds/images/cloud_three.png");
position: absolute;
left: 0;
top: 0;
height: 100%;
width: 300%;
-webkit-animation: cloud_three 100s linear infinite;
-moz-animation: cloud_three 100s linear infinite;
-o-animation: cloud_three 100s linear infinite;
-webkit-transform: translate3d(0, 0, 0);
-moz-transform: translate3d(0, 0, 0);
-o-transform: translate3d(0, 0, 0)
}
@-webkit-keyframes sky_background {
0% {
background: #007fd5;
color: #007fd5
}
50% {
background: #000;
color: #a3d9ff
}
100% {
background: #007fd5;
color: #007fd5
}
}
@-webkit-keyframes moon {
0% {
opacity: 0;
left: -200% -moz-transform: scale(0.5);
-webkit-transform: scale(0.5);
}
50% {
opacity: 1;
-moz-transform: scale(1);
left: 0% bottom: 250px;
-webkit-transform: scale(1);
}
100% {
opacity: 0;
bottom: 500px;
-moz-transform: scale(0.5);
-webkit-transform: scale(0.5);
}
}
@-webkit-keyframes cloud_one {
0% {
left: 0
}
100% {
left: -200%
}
}
@-webkit-keyframes cloud_two {
0% {
left: 0
}
100% {
left: -200%
}
}
@-webkit-keyframes cloud_three {
0% {
left: 0
}
100% {
left: -200%
}
}
@-moz-keyframes sky_background {
0% {
background: #007fd5;
color: #007fd5
}
50% {
background: #000;
color: #a3d9ff
}
100% {
background: #007fd5;
color: #007fd5
}
}
@-moz-keyframes moon {
0% {
opacity: 0;
left: -200% -moz-transform: scale(0.5);
-webkit-transform: scale(0.5);
}
50% {
opacity: 1;
-moz-transform: scale(1);
left: 0% bottom: 250px;
-webkit-transform: scale(1);
}
100% {
opacity: 0;
bottom: 500px;
-moz-transform: scale(0.5);
-webkit-transform: scale(0.5);
}
}
@-moz-keyframes cloud_one {
0% {
left: 0
}
100% {
left: -200%
}
}
@-moz-keyframes cloud_two {
0% {
left: 0
}
100% {
left: -200%
}
}
@-moz-keyframes cloud_three {
0% {
left: 0
}
100% {
left: -200%
}
}
