代码如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
.addBg {
width: 100px;
height: 100px;
background-color: rgba(113,228,250,1);
border-radius: 100px;
-webkit-border-radius: 100px;
position: absolute;
}
</style>
</head>
<body>
<div class="addBg scaleAm" ></div>
</body>
</html>
如图
