CSS样式
白云使用.cloud 和它的:before和:after伪元素来制作。
.cloud {
width: 200px; height: 60px;
background: #fff;
border-radius: 200px;
-moz-border-radius: 200px;
-webkit-border-radius: 200px;
position: relative;
}
.cloud:before, .cloud:after {
content: '';
position: absolute;
background: #fff;
width: 100px; height: 80px;
position: absolute; top: -15px; left: 10px;
border-radius: 100px;
-moz-border-radius: 100px;
-webkit-border-radius: 100px;
-webkit-transform: rotate(30deg);
transform: rotate(30deg);
-moz-transform: rotate(30deg);
}
.cloud:after {
width: 120px; height: 120px;
top: -55px; left: auto; right: 15px;
}每一朵白云都执行moveclouds动画，但是它们的动画速度各不相同。大小和透明度也各不相同。
.x1 {
-webkit-animation: moveclouds 15s linear infinite;
-moz-animation: moveclouds 15s linear infinite;
-o-animation: moveclouds 15s linear infinite;
}
.x2 {
left: 200px;
-webkit-transform: scale(0.6);
-moz-transform: scale(0.6);
transform: scale(0.6);
opacity: 0.6; /*opacity proportional to the size*/
/*Speed will also be proportional to the size and opacity*/
/*More the speed. Less the time in 's' = seconds*/
-webkit-animation: moveclouds 25s linear infinite;
-moz-animation: moveclouds 25s linear infinite;
-o-animation: moveclouds 25s linear infinite;
}
......
@-webkit-keyframes moveclouds {
0% {margin-left: 1000px;}
100% {margin-left: -1000px;}
}
@-moz-keyframes moveclouds {
0% {margin-left: 1000px;}
100% {margin-left: -1000px;}
}
@-o-keyframes moveclouds {
0% {margin-left: 1000px;}
100% {margin-left: -1000px;}
}看完了这篇文章，相信你对“css3如何实现简单的白云飘动背景特效”有了一定的了解，如果想了解更多相关知识，欢迎关注创新互联行业资讯频道，感谢各位的阅读！
