Merge branch 'develop' of http://git.dev.yoho.cn/web/yohobuy into develop

@@ -140,7 +140,7 @@ function reMarginFooter(fixedElement) {
 
         //已登录
         $op.prepend(
-            'Hi,' +
+            '<span>Hi,</span>' +
             '<a class="user-name" href="http://m.yohobuy.com/home?tmp=' + Math.random() + '">' + user[0] + '</a>' +
             '<a href="http://m.yohobuy.com/passport/signout/index?token=' + user[3] + '">退出</a>'
         );

@@ -7,11 +7,21 @@
         padding: 0 15px;
         height: 60px;
         line-height: 60px;
-
+        span{
+            display: inline-block;
+            overflow:hidden;
+        }
+        a{
+            display: inline-block;
+            overflow:hidden;
+        }
         .user-name {
             text-decoration: underline;
             margin-left: .3em;
             margin-right: 1em;
+            max-width: 200rem / $pxConvertRem;
+            text-overflow:ellipsis; 
+            white-space:nowrap; 
         }
 
         .back-to-top {