纯css轮播(焦点)

<div class="iteye-blog-content-contain" style="font-size: 14px;">
<pre name="code" class="html">&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt; 飛天网事--纯CSS代码实现图片轮播 &lt;/title&gt;
    &lt;meta charset="utf-8" /&gt;
    &lt;meta name="description" content="飛天网事，WEB前端开发，纯css3代码图片轮播，HTML5+CSS3精彩案例" /&gt;
    &lt;meta name="keywords" content="飛天网事，WEB前端开发，HTML5，CSS3，jQuery，" /&gt;
    &lt;meta name="author" content="R.tian @eduppp.cn 2015"&gt;
    &lt;link rel="shortcut icon"  href="http://eduppp.cn/images/logo4.gif" /&gt;
    &lt;link rel="apple-touch-icon" href="http://eduppp.cn/images/logo.gif" /&gt;
    &lt;style type="text/css"&gt;
        #frame {/*----------图片轮播相框容器----------*/
            position: absolute; /*--绝对定位，方便子元素的定位*/
            width: 300px;
            height: 200px;
            overflow: hidden;/*--相框作用，只显示一个图片---*/
            border-radius:5px;
        }
        #dis {/*--绝对定位方便li图片简介的自动分布定位---*/
            position: absolute;
            left: -50px;
            top: -10px;
            opacity: 0.5;
        }
        #dis li {
            display: inline-block;
            width: 200px;
            height: 20px;
            margin: 0 50px;
            float: left;
            text-align: center;
            color: #fff;
            border-radius: 10px;
            background: #000;
        }
        #photos img {
            float: left;
            width:300px;
            height:200px;
        }
        #photos {/*---设置总的图片宽度--通过位移来达到轮播效果----*/
            position: absolute;z-index:9;
            width: calc(300px * 5);/*---修改图片数量的话需要修改下面的动画参数*/
        }
        .play{
            animation: ma 20s ease-out infinite alternate;/**/
        }
        @keyframes ma {/*---每图片切换有两个阶段：位移切换和静置。中间的效果可以任意定制----*/
            0%,20% {        margin-left: 0px;       }
            25%,40% {       margin-left: -300px;    }
            45%,60% {       margin-left: -600px;    }
            65%,80% {       margin-left: -900px;    }
            85%,100% {      margin-left: -1200px;   }
        }
        .num{
            position:absolute;z-index:10;
            display:inline-block;
            right:10px;top:165px;
            border-radius:100%;
            background:#f00;
            width:25px;height:25px;
            line-height:25px;
            cursor:pointer;
            color:#fff;
            text-align:center;
            opacity:0.8;
        }
        .num:hover{background:#00f;}
        .num:hover,#photos:hover{animation-play-state:paused;}
        .num:nth-child(2){margin-right:30px}
        .num:nth-child(3){margin-right:60px}
        .num:nth-child(4){margin-right:90px}
        .num:nth-child(5){margin-right:120px}
        #a1:hover ~ #photos{animation: ma1 .5s ease-out forwards;}
        #a2:hover ~ #photos{animation: ma2 .5s ease-out forwards;}
        #a3:hover ~ #photos{animation: ma3 .5s ease-out forwards;}
        #a4:hover ~ #photos{animation: ma4 .5s ease-out forwards;}
        #a5:hover ~ #photos {animation: ma5 .5s ease-out forwards;}
        @keyframes ma1 {0%{margin-left:-1200px;}100%{margin-left:-0px;} }
        @keyframes ma2 {0%{margin-left:-1200px;}100%{margin-left:-300px;}   }
        @keyframes ma3 {100%{margin-left:-600px;}   }
        @keyframes ma4 {100%{margin-left:-900px;}   }
        @keyframes ma5 {100%{margin-left:-1200px;}  }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;div id="frame" &gt;
    &lt;a id="a1" class="num"&gt;1&lt;/a&gt;
    &lt;a id="a2" class="num"&gt;2&lt;/a&gt;
    &lt;a id="a3" class="num"&gt;3&lt;/a&gt;
    &lt;a id="a4" class="num"&gt;4&lt;/a&gt;
    &lt;a id="a5" class="num"&gt;5&lt;/a&gt;
    &lt;div id="photos" class="play"&gt;
        &lt;img src="http://eduppp.cn/images/0/1.jpg" &gt;
        &lt;img src="http://eduppp.cn/images/0/3.jpg" &gt;
        &lt;img src="http://eduppp.cn/images/0/4.jpg" &gt;
        &lt;img src="http://eduppp.cn/images/0/5.jpg" &gt;
        &lt;img src="http://eduppp.cn/images/0/2.jpg" &gt;
        &lt;ul id="dis"&gt;
            &lt;li&gt;中国标志性建筑：看看&lt;/li&gt;
            &lt;li&gt;中国标志性建筑：信息&lt;/li&gt;
            &lt;li&gt;中国标志性建筑：安安&lt;/li&gt;
            &lt;li&gt;中国标志性建筑：人人&lt;/li&gt;
            &lt;li&gt;中国标志性建筑：引用&lt;/li&gt;
        &lt;/ul&gt;
    &lt;/div&gt;
&lt;/div&gt;
&lt;/body&gt;
&lt;/html&gt;</pre>
<p> </p>
</div>