运行效果
html
<head>
<meta charset='UTF-8'>
<title>CSS3 Cloud Animations By Montana Flynn</title>
</head>
<body>
<div class="sky">
<div class="moon"></div>
<div class="clouds_two"></div>
<div class="clouds_one"></div>
<div class="clouds_three"></div>
</div>
</body>
html, body {
margin: 0;
height: 100%
}
.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://i.imgur.com/wFXd68N.png");
position: absolute;
left: 0;
height: 300%;
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://www.scri8e.com/stars/PNG_Clouds/zc06.png?filename=./zc06.png&w0=800&h0s=289&imgType=3&h1=50&w1=140");
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://freepngimages.com/wp-content/uploads/2016/02/clouds-transparent-background-2.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/<a href="http://www.itxz.com/?tag=css" title="查看更多关于css的文章" target="_blank">css</a>-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%
}
}
