CSS3小模块hover左右交替互换动画
1 <ul class="readers-list"> 2 <li> 3 <a href="#"> 4 <img src="default.jpg" alt="" /> 5 <em>点头猪</em> 6 <strong>+10</strong><br /> 7 lilyxue.blogbus.com/ 8 </a> 9 </li> 10 <li> 11 <a href="#"> 12 <img src="default.jpg" alt="" /> 13 <em>点头猪</em> 14 <strong>+10</strong><br /> 15 lilyxue.blogbus.com/ 16 </a> 17 </li> 18 </ul>
1 *{ margin:0; padding:0; font-size:12px;} 2 .readers-list{ line-height:18px; overflow:hidden; _zoom:1;} 3 .readers-list li{ float:left; width:200px; *margin-right:-1px;} 4 .readers-list a, .readers-list a:hover strong{ background-color:#f2f2f2; background-image:-webkit-linear-gradient(#f8f8f8,#f2f2f2); background-image:-moz-linear-gradient(#f8f8f8,#f2f2f2); background-image:linear-gradient(#f8f8f8,#f2f2f2);} 5 .readers-list a{ position:relative; display:block; height:36px; margin:4px; padding:4px 4px 4px 44px; color:#999; overflow:hidden; border:1px solid #ccc; border-radius:2px; box-shadow:#eee 0 0 2px;} 6 .readers-list a:hover{ border-color:#bbb; box-shadow:#ccc 0 0 2px; background-color:#fff; background-image:none;} 7 .readers-list img, .readers-list em, .readers-list strong{ -webkit-transition:all .2s ease-out; -moz-transition:all .2s ease-out; transition:all .2s ease-out;} 8 .readers-list img{ float:left; width:36px; height:36px; margin:0 8px 0 -40px; border-radius:2px} 9 .readers-list a:hover img{ opacity:.6; margin-left:0;} 10 .readers-list em{ font-style:normal; margin-right:10px;} 11 .readers-list a:hover em{ color:#EE8B17; font-weight:bold;} 12 .readers-list strong{ position:absolute; right:6px; top:4px; width:40px; text-align:right; font-size:14px;} 13 .readers-list a:hover strong{ color:#EE8B17; height:44px; line-height:40px; right:150px; top:0; text-align:center; border-right:1px solid #ccc;}
point:
hover伪类部分定义完第二种效果，关键是给三个对象img em strong增加动画属性transition变换从而实现过渡；
box-shadow:Xoffset Yoffset blur color (inset)
原文转至 详细解说：简单CSS3实现炫酷读者墙
