nav focus

@@ -184,10 +184,19 @@
             color: #999;
         }
 
+        .nav-txt {
+            display: inline-block;
+            height: 100%;
+            box-sizing: border-box;
+        }
+
         .active > a {
-            border-bottom: 2px solid #000;
             color: #000;
 
+            .nav-txt {
+                border-bottom: 2px solid #000;
+            }
+
             .iconfont {
                 color: #999;
 

@@ -52,13 +52,13 @@
     <ul id="list-nav" class="list-nav clearfix">
         <li class="new active">
             <a href="javascript:void(0);">
-                最新
+                <span class="nav-txt">最新</span>
                 <span class="iconfont cur">&#xe616;</span>
             </a>
         </li>
         <li class="price">
             <a href="javascript:void(0);">
-                价格
+                <span class="nav-txt">价格</span>
                 <span class="icon">
                     <i class="iconfont up">&#xe615;</i>
                     <i class="iconfont down cur">&#xe616;</i>
@@ -67,7 +67,7 @@
         </li>
         <li class="discount">
             <a href="javascript:void(0);">
-                折扣
+                <span class="nav-txt">折扣</span>
                 <span class="icon">
                     <i class="iconfont up">&#xe615;</i>
                     <i class="iconfont down cur">&#xe616;</i>
@@ -76,7 +76,7 @@
         </li>
         <li class="filter">
             <a href="javascript:void(0);">
-                筛选
+                <span class="nav-txt">筛选</span>
                 <span class="iconfont">&#xe613;</span>
             </a>
         </li>