css实现横向带箭头步骤流程效果

　通过纯css实现圆角的步骤流程效果，扩展性强，可以随意增加减少数量，兼容性ie6+。

具体代码：

 <style type="text/css">

 ul{margin:0px; padding:0px; list-style:none;}

     .wrap{width:960px; height:auto; line-height:30px; margin:100px auto 0;}

     .step-case{height:40px;}

         .step-case li{ float:left; margin:0px; width:12.5%;position:relative; cursor:pointer;}

         .step-case li span{display:block; background-color:#ccc;  height:40px; line-height:40px;  text-align:center; color:#fff; font-weight:bold;}

         .step-case b{position:absolute; font-size:0px; line-height:0px; top:0px;}

         .step-case .b-l{border-width:2px 2px 2px 0; border-style:dashed solid dashed dashed; border-color:transparent #ccc transparent transparent; height:36px; left:-2px;}

         .step-case .b-r{border-width:2px 0 2px 2px; border-style:dashed dashed dashed solid; border-color:transparent transparent transparent #ccc; height:36px; right:-2px;}

         .step-case .b-1{border-width:20px 0 20px 20px; border-style:solid dashed solid solid; border-color:#ccc transparent #ccc #ddd; left:-20px;}

         .step-case .b-2{border-width:20px 0 20px 20px; border-style:dashed dashed dashed solid; border-color:transparent transparent transparent #ccc; left:-21px;}

         /*当前状态*/

         .step-case .s-cur span{background-color:orange;}

         .step-case .s-cur .b-l{border-right-color:orange;}

         .step-case .s-cur .b-r{border-left-color:orange;}

         .step-case .s-cur .b-1{border-color:orange orange orange #FABF55;}

         .step-case .s-cur .b-2{border-left-color:#FADBA5;}

         /*当前状态后*/

         .step-case .s-cur-next .b-2{border-color:transparent transparent transparent orange;}

         /*完成的状态*/

         .step-case .s-finish span{background-color:#FADBA5; color:#000;}

         .step-case .s-finish .b-l{border-right-color:#FADBA5;}

         .step-case .s-finish .b-r{border-left-color:#FADBA5;}

         .step-case .s-finish .b-1{border-color:#FADBA5 #FADBA5 #FADBA5 #FABF55;}

         .step-case .s-finish .b-2{border-left-color:#FADBA5;}

 </style>

 <script type="text/javascript">

     window.onload = function(){

         var step = document.getElementById("step"),li = step.getElementsByTagName("li");

         for(var i = 0;i<li.length;i++){

             //(function(i){

                 li[i].index = i;

                 li[i].onclick = function(){

                     var i = this.index;

                     for(var j = 0;j<i;j++){

                         li[j].className = "s-finish";

                     }

                     for(var j = li.length;j>i;){

                         li[--j].className = "";

                         if(j==i+1){

                             li[j].className = "s-cur-next";

                         }

                     }

                     this.className = "s-cur";

                 }

             //})(i);

         }

     };

 </script>

 <div class="wrap">

     <ul class="step-case" id="step">

         <li class="s-finish"><span>第1步</span><b class="b-l"></b></li>

         <li class="s-finish"><span>第2步</span><b class="b-1"></b><b class="b-2"></b></li>

         <li class="s-finish"><span>第3步</span><b class="b-1"></b><b class="b-2"></b></li>

         <li class="s-finish"><span>第4步</span><b class="b-1"></b><b class="b-2"></b></li>

         <li class="s-cur"><span>第5步</span><b class="b-1"></b><b class="b-2"></b></li>

         <li class="s-cur-next"><span>第6步</span><b class="b-1"></b><b class="b-2"></b></li>

         <li><span>第7步</span><b class="b-1"></b><b class="b-2"></b></li>

         <li><span>第8步</span><b class="b-1"></b><b class="b-2"></b><b class="b-r"></b></li>

     </ul>

 </div>