<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
.video_btn_container{
height: 100px;
width: 100px;
position: relative;
border-radius: 50%;
background-color: rgb(255, 255, 255,.8);
}
.btn_border{
height: 100px;
width: 100px;
background: url('http://note.youdao.com/yws/public/resource/a5dec28b4c472b42d7126f3a389e3f28/xmlnote/531FC34716824BE5A6ABD0451F9FDBF0/WEBRESOURCEdd5881c009e6d8d9b5c7d166f93d5f53/7216') no-repeat;
background-size: 100% 100%;
transition: my_border 2s linear infinite;
-webkit-animation:my_border 2s linear infinite;
}
.btn_core{
height: 30px;
width: 30px;
background: url('http://note.youdao.com/yws/public/resource/a5dec28b4c472b42d7126f3a389e3f28/xmlnote/531FC34716824BE5A6ABD0451F9FDBF0/WEBRESOURCEcf4dc195da4c948fecffeee63708e2eb/7218') no-repeat;
background-size: 100% 100%;
background-position: center center;
position: absolute;
top: 0;left: 0;right: 0;bottom: 0;
margin: auto;
transition: my_core 2s linear infinite;
-webkit-animation:my_core 2s linear infinite;
}
@keyframes my_border{
0%{transform: rotate(0deg);}
25%{transform: rotate(90deg);}
50%{transform: rotate(180deg);}
75%{transform: rotate(270deg);}
100%{transform: rotate(360deg);}
}
@-webkit-keyframes my_border{
0%{transform: rotate(0deg);}
25%{transform: rotate(90deg);}
50%{transform: rotate(180deg);}
75%{transform: rotate(270deg);}
100%{transform: rotate(360deg);}
}
@keyframes my_core{
0%{transform: scale(.9,.9);}
25%{transform: scale(1,1);}
50%{transform: scale(1.1,1.1);}
75%{transform: scale(1,1);}
100%{transform: scale(0.9,.9);}
}
@-webkit-keyframes my_core{
0%{transform: scale(.9,.9);}
25%{transform: scale(1,1);}
50%{transform: scale(1.1,1.1);}
75%{transform: scale(1,1);}
100%{transform: scale(0.9,.9);}
}
</style>
</head>
<body>
<div class="video_btn_container">
<div class="btn_border"></div>
<div class="btn_core"></div>
</div>
</body>
</html>
