会旋转的CSS太极图一个添加了旋转动画效果的css太极图。只用了一个div盒子，其余部分使用双伪元素搞定。结构清晰易

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>太极图</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body {
            background-color: #ccc;
        }

        .box {
            width: 0;
            height: 400px;
            border-left: 200px solid black;
            border-right: 200px solid white;
            border-radius: 50%;
            box-shadow: 0px 0px 20px 5px #cccc66;
            position: relative;
            animation: x 10s linear infinite;
            margin-left: auto;
            margin-right: auto;
        }

        .box::before {
            content: "";
            width: 60px;
            height: 60px;
            border: 70px solid black;
            border-radius: 50%;
            position: absolute;
            top: 0px;
            left: -90px;
            background-color: #fff;
        }

        .box::after {
            content: "";
            width: 60px;
            height: 60px;
            border: 70px solid white;
            border-radius: 50%;
            position: absolute;
            margin-top: 200px;
            margin-left: -100px;
            background-color: #000;
        }

        /*先定义一个@keyframes 命名为x*/
        @keyframes x {
            from {
                transform: rotate(0deg);
            }

            to {
                transform: rotate(360deg);
            }
        }
    </style>
</head>

<body>
    <div class="box"></div>
</body>

</html>