以前制作网页动画一般使用javascript，现在已经有越来越多动动画使用纯CSS实现，并且动画的控制也可以使用CSS3实现，因为CSS 3来了，CSS 3的动画功能确实强大。以下是一个纯CSS3制作的风车旋转动画，而且也用CSS 3控制速度。
体验效果：
http://hovertree.com/texiao/css3/40/
效果图：
可以看到，风车的叶片是三角形，使用css画各种图形请参考：
http://hovertree.com/h/bjaf/jtkqnsc1.htm
http://hovertree.com/h/bjaf/ltgc20vn.htm
css制作动画是用到了animation属性，请参考：
http://hovertree.com/h/bjaf/i309b77d.htm
http://hovertree.com/h/bjaf/fwck53gt.htm
http://hovertree.com/h/bjaf/xpxgjfap.htm
http://hovertree.com/h/bjaf/kqud99m6.htm
扇叶的旋转使用到了transform属性，参考：
http://hovertree.com/h/bjaf/c3bshswk.htm
http://hovertree.com/h/bjaf/lxsexx3m.htm
本示例用到了CSS 3的选择器nth-of-type，参考：
http://hovertree.com/h/bjaf/c2c0k0tf.htm
下面给出本示例的代码：
<!DOCTYPE html> <html lang="zh-CN"> <head> <meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1" /> <title>可控制转速CSS3旋转风车特效 - 何问起</title> <link rel="stylesheet" href="http://hovertree.com/texiao/css3/40/style/hovertreespin.css"> </head> <body> <div class="wrapper"> <div class="pin-layout"> <a href="#" class="control">暂停</a> <a href="#" class="control">旋转</a> <a href="#" class="control">中速</a> <a href="#" class="control">高速</a> <div class="pillar"> <div class="dot"></div> <span class="item1"></span> <span class="item2"></span> <span class="item3"></span> <span class="item4"></span> </div> </div> <p><b>何问起温馨小提示：</b>暂停后点击页面任何区域都可自动旋转哦!</p> </div><!-- end wrapper --> <div style="text-align:center;margin:100px 0; font:normal 14px/24px 'MicroSoft YaHei';"> <p>适用于支持CSS3的浏览器。</p> <p>来源：<a href="http://hovertree.com/" target="_blank">何问起</a> <a href="http://hovertree.com/h/bjag/efqb2w4s.htm" target="_blank">说明</a></p> </div> </body> </html>
CSS文件代码：
*{margin:0; padding:0;} body{background:#eee;width:100%; height:100%;} .wrapper{ position: relative; width: 800px; height:450px; margin:60px auto 0; } .wrapper .pin-layout{ position: absolute; bottom: 0; left: calc(50% - 20px); width:40px; height:280px; } .wrapper .pin-layout::after{ position:absolute; bottom:0; left: calc(50% - 20px); content:""; height:0; width:10px; border-width: 0px 15px 280px 15px; border-style:solid; border-color:transparent transparent #6B3500 transparent; } .wrapper .pin-layout .pillar{ position: absolute; top: -18px; left: calc(50% - 18px); width:36px; height:36px; z-index: 9; transform: rotateZ(45deg); transition:all .9s linear; animation: hovertreespin 3s linear 0s infinite; } .pin-layout .control:hover::after{ position: absolute; left: 0; content: ""; width: 100%; height:100%; background: rgba(0,0,0,.3); } .pin-layout .control{ position: absolute; bottom:0; width: 80px; height:30px; line-height:30px; border: 1px solid #ADADAD; border-radius: 4px; text-align:center; text-decoration:none; letter-spacing:2px; color: white; background: red; } .pin-layout .control:nth-of-type(1){ left: -100px; } .pin-layout .control:nth-of-type(3):focus ~ .pillar{ animation-duration:.8s; } .pin-layout .control:nth-of-type(4):focus ~ .pillar{ animation-duration:.2s; } .pin-layout .control:nth-of-type(2){ right: -100px; background: green; } .pin-layout .control:nth-of-type(3){ bottom: -40px; left: -100px; background: #037862; } .pin-layout .control:nth-of-type(4){ bottom: -40px; right: -100px; background: #036B3E; } .pin-layout .control:nth-of-type(1):focus ~ .pillar{ animation-play-state:paused; } .pin-layout .control:nth-of-type(2):focus ~ .pillar{ animation-play-state:running; } .pin-layout .pillar span[class^="item"]{ position: absolute; top: calc(-200px + 18px); left: 18px; border-width:0px 80px 200px 0px; border-style:solid; } .pin-layout .pillar span[class^="item"]:nth-of-type(1){ z-index:1; border-color:transparent transparent dodgerblue transparent; /*border-color:green red gray blue;*/ } .pin-layout .pillar span[class^="item"]:nth-of-type(2){ z-index:2; border-color:transparent transparent orangered transparent; transform-origin:left bottom; transform: rotateZ(90deg); } .pin-layout .pillar span[class^="item"]:nth-of-type(3){ z-index:3; border-color:transparent transparent greenyellow transparent; transform-origin:left bottom; transform: rotateZ(180deg); } .pin-layout .pillar span[class^="item"]:nth-of-type(4){ z-index:4; border-color:transparent transparent mediumpurple transparent; transform-origin:left bottom; transform: rotateZ(270deg); } .wrapper .pin-layout .pillar .dot{ position: absolute; top: 0; left: 0; border-width: 19px; border-style: solid; border-color: #3C0505 transparent #3C0505 transparent; border-radius:50%; background:#F505EE; z-index:1999; box-shadow:0 0 2px #1A0505; } @keyframes hovertreespin { 0%{ transform: rotate(0deg) } 100%{ transform:rotate(360deg); } }
使用图片扇叶的风车：
http://hovertree.com/h/bjaf/h9tb5itb.htm
特效集合：