108CSS3 Effect: Taiji FIG.

Method One: three div achieved. Ideas: (1) by the outer circular div gradation of black and white content is divided into two upper and lower regions; (2) with two circular div color content of the intermediate layer to change the color of the region; (3) an inner layer with two circular div to restore the color of the color content of the region. Place the cursor on the map Tai Chi, Tai Chi map will rotate! 
** css Code ** 

`` `CSS: RUN 
<! DOCTYPE HTML> 
<HTML> 
<head> 
    <Meta charset =" UTF-. 8 "> 
    <title> Taiji </ title> 
    <class style =" CP-PEN- Styles "> 
       * { 
           padding: 0; 
           margin: 0; 
       } 
       .outer { 
           background: Linear-gradient (to bottom, White 50%, Black 50%); 
           margin: Auto 100px; 
           width: 200px; 
           height: 200px; 
           border- RADIUS: 50%; 
           position: relative; 
           border:
           transition: all 5s ease;
       }
       .outer:hover{
           transform: rotate(360deg) scale(1.5);
       }
       .outer .left{
           background: white;
           width:100px;
           height:100px;
           border-radius: 50%;
           position:absolute;
           left: 0;
           top:50px;
       }
       .outer .left .leftInner{
           background: black;
           width:40px;
           height:40px;
           border-radius: 50%;
           position:absolute;
           left: 30px;
           top:30px;
       }
       .outer .right{
           background: black;
           width:100px;
           height:100px;
           border-radius: 50%;
           position:absolute;
           right: 0;
           top:50px;
       }
       .outer .right .rightInner{
           background: white;
           width:40px;
           height:40px;
           border-radius: 50%;
           position:absolute;
           left:30px;
           top:30px;
       }
    </style>
</head>
<body>
<div class="outer">
    <div class="left">
        <div class="leftInner"></div>
    </div>
    <div class = "right"> 
        <div class = "rightInner"> </ div> 
    </ div> 
</ div> 
</ body> 
</ HTML> 
`` ` 


Method two: pseudo-class implementation. Ideas: (1) by the outer circular gradation Among div into upper and lower two regions; (2) adding a dummy class, pseudo-circular border color class to change the color of the region; (3) round by pseudo-class color restoration shaped color content of the region. Place the cursor on the map Tai Chi, Tai Chi map will rotate! 
** html Code ** 

: `` `HTML RUN 
<! DOCTYPE HTML> 
<HTML> 
<head> 
    <Meta charset =" UTF-. 8 "> 
    <title> Taiji </ title> 
    <style> 
        * { 
            margin: 0; 
            padding: 0; 
        } 
        div,: before,: After { 
            Box-Sizing: border-Box;




            left: 50%;
            width: 200px;
            height: 200px;
            margin: -100px 0 0 -100px;
            background: linear-gradient(0deg, black 50%, white 50%);
            border-radius: 50%;
            border:1px black solid;
        }
        @keyframes taiji {
            from{
                transform: rotate(0deg) scale(1);
            }
            to{
                transform: rotate(360deg) scale(2);
            }
        }
        #taiji:hover {
            animation: taiji 1s ease 0s infinite;
        }
        #taiji:before, #taiji:after {
            content: "";
            display: block;
            position: absolute;
            width: 50%;
            height: 50%;
            top: 25%;
            border-radius: 50%;
            border: 35px solid transparent;
        }
        #taiji:before {
            left: 0;
            border-color: black;
            background-color: white;
        }
        #taiji:after {
            right: 0;
            border-color: white;
            background-color: black;
        }
    </style>
</head>
<body>
<div id="taiji"></div>
</body>
</html>
```
108CSS3 Effect: Taiji FIG.

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