yoho-footer -> blk-footer

@@ -65,7 +65,7 @@
             <span class="iconfont">&#xe61c;</span>
             <span class="hover-text hide">在线<br>客服</span>
         </a>
-        <div class="return-top">
+        <div class="return-top hide">
             <span class="iconfont bold">&#xe617;</span>
             <span class="hover-text hide">返回<br>顶部</span>
         </div>

-<div class="yoho-footer">
+<div class="blk-footer">
     <div class="center-content">
         <ul class="about-us clearfix">
             <li><a href="#">BLK首页</a></li>

-.yoho-footer {
+.blk-footer {
     background: #fff;
 
     .center-content {