Time: 20200131
用圆形组合
截屏2020-01-31下午11.14.22.png
这么一拆解就很清晰了。
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>太极阴阳图</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div id="taiji"></div>
</body>
</html>
CSS
body {
background-color: grey;
}
/* 黑白圆 */
#taiji {
/* 使得定义的宽度 + 边的大小 == 300 */
width: 150px;
height: 300px;
margin: 100px auto;
border-radius: 50%;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
-ms-border-radius: 50%;
-o-border-radius: 50%;
background-color: #fff;
/* 解决一半黑一半白的圆的生成问题 */
border-left: 150px solid black;
position: relative;
}
/* 伪类 */
#taiji::before {
content: '';
position: absolute;
width: 0px;
height: 0px;
padding: 25px;
border-radius: 50%;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
-ms-border-radius: 50%;
-o-border-radius: 50%;
border: 50px solid black;
background-color: white;
left: -75px;
}
#taiji::after {
content: '';
position: absolute;
width: 0px;
height: 0px;
padding: 25px;
border-radius: 50%;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
-ms-border-radius: 50%;
-o-border-radius: 50%;
border: 50px solid white;
background-color: black;
left: -75px;
top: 150px;
}
显示效果：
截屏2020-01-31下午11.46.44.png
END.
