css实现圆环旋转加载
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>css实现圆环旋转加载</title>
<style>
*{
margin:0
padding:0
}
#outbox{
position:relative/*相对定位*/
width:100px/*宽度100px*/
height:100px/*高度100px*/
background:orange/*背景色橙色*/
border-radius:50%/*圆角50%*/
margin:100px/*外侧边距100px*/
}
#outbox::before{/*前置伪元素*/
content:""/*内容空*/
display:block/*块元素*/
position:absolute/*绝对定位*/
width:80px/*宽度80px*/
height:80px/*高度80px*/
left:10px/*左边距10px*/
top:10px/*距离顶部10px*/
border-radius:50%/*圆角50%*/
background:white/*背景色白色*/
}
#outbox::after{/*后置伪元素*/
content:""/*内容为空*/
display:block/*转为块元素*/
position:absolute/*绝对定位*/
width:100px/*宽度100px*/
height:100px/*高度100px*/
top:0/*距离父容器顶部边距0*/
left:0/*距离入容器左边距0*/
border-radius:50%/*圆角50%*/
background:white/*背景色白色*/
animation:myfirst 1s both linear infinite/*绑定动画。为了看清楚效果，设置动画反复执行。使用的时候只执行一次就好了*/
-webkit-animation:myfirst 1s both linear infinite/* Safari and Chrome */
}
@keyframes myfirst/*动画开始*/
{
0%{
-webkit-clip-path: polygon(50% 50%, 100% 0, 100% 100%, 0 100%, 0 0, 100% 0)/*不裁剪的初始效果*/
clip-path: polygon(50% 50%, 100% 0, 100% 100%, 0 100%, 0 0, 100% 0)
}
40%{
-webkit-clip-path: polygon(50% 50%, 100% 0, 100% 100%, 0 100%, 0 0, 0 0)/*裁剪四分之一*/
clip-path: polygon(50% 50%, 100% 0, 100% 100%, 0 100%, 0 0, 0 0)
}
60%{
-webkit-clip-path: polygon(50% 50%, 100% 0, 100% 100%, 0 100%, 0 100%, 0 100%)/*裁剪四分之二*/
clip-path: polygon(50% 50%, 100% 0, 100% 100%, 0 100%, 0 100%, 0 100%)
}
90%{
-webkit-clip-path: polygon(50% 50%, 100% 0, 100% 100%, 100% 100%, 100% 100%, 100% 100%)/*裁剪四分之三*/
clip-path: polygon(50% 50%, 100% 0, 100% 100%, 100% 100%, 100% 100%, 100% 100%)
}
100%{
-webkit-clip-path: polygon(50% 50%, 100% 0, 100% 100%, 100% 0, 100% 0, 100% 0)/*裁剪四分之四*/
clip-path: polygon(50% 50%, 100% 0, 100% 100%, 100% 0, 100% 0, 100% 0)
}
}
</style>
</head>
<body>
<div id="outbox"></div>
</body>
</html>
<!--裁剪比较粗糙，如果要更顺滑，可以裁剪得更细腻一点，比如裁剪十分之一，十分之二，十分之三，以此类推一直到十分之十。-->
戳我获取 完整源码
