取消用户选中后出现的蓝色背景块

Author: SunQQQ

src/assets/css/base.less

@@ -31,6 +31,7 @@ body{
   padding: 0;
   margin: 0;
   width: 100%;
+  user-select: none;
 }
 .RightContent{
   margin: 10px;