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>