<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>倒圆角</title>
<style type="text/css">
.one{
height: 100px;
width: 50px;
border: 1px solid gainsboro;
/*border-radius: 50px 20px 10px 0px;*//*值为 *px *%倒圆角*/
/*border-radius: 50px;*/
border-radius: 50px;
/*border-radius:50%;*/
}
.two{
height: 200px;
width: 200px;
background: yellow;
border-radius: 100px 0px;
}
.three{
height: 200px;
width: 200px;
background: yellow;
border-radius: 200px 0px;
}
.four{ /*月牙弯弯*/
height: 200px;
width: 200px;
/*background: red;*/
box-shadow: 20px 20px 0px yellow inset;
border-radius: 50%;
}
</style>
</head>
<body>
<div class="one"></div>
<div class="two"></div>
<div class="three"></div>
<div class="four"></div>
</body>
</html>
