chose panel style

@@ -162,10 +162,12 @@
     }
 
     .btn-wrap {
+        position: relative;
         height: 120rem / $pxConvertRem;
         border-top: 1px solid #e6e6e6;
         padding: 20rem / $pxConvertRem;
         text-align: center;
+        background: #fff;
         box-sizing: border-box;
 
         .btn-sure {