<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width">
<title>css画圆</title>
<style>
#test {
width:30px;
height:30px;
border: 3px solid #ffa56f;
border-radius: 100%;
background: #FF8033;
box-shadow: 0px 0px 5px #ffa56f;
}
</style>
</head>
<body>
<div id="test"></div>
</body>
</html>