消息点击增加背景颜色

components/mobile/center/Message.vue

@@ -106,6 +106,9 @@
     .message-list {
       background: #fff;
       padding: 0 .15rem 0 .2rem;
+      &:active{
+         background: #e1e1e1;
+      }
       .content {
         padding: .14rem 0;
         overflow: hidden;