diff --git a/src/styles/aside.less b/src/styles/aside.less
index b68a30c8..ac253b83 100644
--- a/src/styles/aside.less
+++ b/src/styles/aside.less
@@ -476,7 +476,7 @@ aside {
     }
 
     .help {
-        width: 320px;
+        width: 319px; // - 1px border-roght; 320px;
         padding: 14px 0px;
         text-align: center;
         border-top: 1px solid @color_divider;