diff --git a/src/styles/aside.less b/src/styles/aside.less
index e05cc16b..86f02832 100644
--- a/src/styles/aside.less
+++ b/src/styles/aside.less
@@ -414,7 +414,7 @@ aside {
         }
 
         &.back {
-            padding-left: 100px;
+            padding-left: 80px;
 
             &:before {
                 content: '';
@@ -422,13 +422,13 @@ aside {
                 display: block;
                 width: 20px;
                 height: 20px;
-                left: 76px;
+                left: 56px;
                 top: 0px;
                 bottom: 0px;
                 margin: auto 0;
                 background-repeat: no-repeat;
                 background-position: center;
-                background-size: 20px 20px;
+                background-size: auto 20px;
             }
 
             &:after {