css画太极 

<!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>css画太极</title>
    <style>
        body{
            background-color: grey;
        }
        #yinyang{
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background-color: #fff;
            position: relative;
            left:calc(50% - 150px);  /* calc 操作符的两边必须有空间*/
            background: linear-gradient(to bottom, #ffffff 0%,#ffffff 50%,#000000 50%,#000000 100%); 
        }
        #yin{
            width:50%;
            height: 50%;
            background-color: #000000;
            border-radius: 50%;
            position: absolute;
            top:25%;
        }
        #yang{
            width:50%;
            height: 50%;
            background-color: #ffffff;
            border-radius: 50%;
            position: absolute;
            top:25%;
            right: 0;
        }
        .yangpoint{
            background-color:#ffffff;
            width:20%;
            height: 20%;
            border-radius:50%;
            position: absolute;
            left:40%;
            top:40%; /* 50%-20%/2*/
        }
        .yinpoint{
            background-color:#000000;
            width:20%;
            height: 20%;
            border-radius:50%;
            position: absolute;
            left:40%;
            top:40%;
        }
    </style>
</head>
<body>
    <div id="yinyang">
        <div id="yin">
            <div class="yangpoint"></div>
        </div>
        <div id="yang">
            <div class="yinpoint"></div>
        </div>
    </div>
</body>
</html>

posted on 2019-05-18 16:00  ShawSpring  阅读(208)  评论(0)  编辑  收藏  举报

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