border-radius实现椭圆、半椭圆

例子 1

border-radius:2em;

等价于：

border-top-left-radius:2em;
border-top-right-radius:2em;
border-bottom-right-radius:2em;
border-bottom-left-radius:2em;

例子 2

border-radius: 2em 1em 4em / 0.5em 3em;

等价于：

border-top-left-radius: 2em 0.5em;
border-top-right-radius: 1em 3em;
border-bottom-right-radius: 4em 0.5em;
border-bottom-left-radius: 1em 3em;



基本html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>border-radius</title>
    <style>
        div{
            width:250px;
            height: 150px;
            margin: 50px;
            background: #ffd900;
        }
    </style>
</head>
<body>
    <div></div>
</body>
</html>

1、椭圆

 div{
         border-radius: 50%;
     }

2、上椭圆

div{
            border-top-left-radius: 50% 100%;
            border-top-right-radius: 50% 100%;
        }

或

div{
            border-radius: 50%/100% 100% 0 0;
        }

3、右椭圆

div{
            border-top-right-radius: 100% 50%;
            border-bottom-right-radius: 100% 50%;
        }

或

div{
            border-radius: 0 100% 100% 0/0 50% 50% 0;
        }

4、下椭圆

div{
            border-bottom-left-radius: 50% 100%;
            border-bottom-right-radius: 50% 100%;
        }

或

div{
            border-radius: 50%/0 0 100% 100%;
        }

5、左椭圆

div{
            border-top-left-radius: 100% 50%;
            border-bottom-left-radius: 100% 50%;
        }

或

div{
            border-radius: 100% 0 0 100%/50% 0 0 50%;
        }

半椭圆

posted on 2020-07-18 20:25 ksy_c 阅读(699) 评论(0) 编辑收藏举报