优化 样式

src/assets/styles/sidebar.scss

@@ -17,7 +17,7 @@
     background-color: $base-menu-background;
     height: 100%;
     position: fixed;
-    font-size: 0px;
+    font-size: 0;
     top: 0;
     bottom: 0;
     left: 0;
@@ -36,7 +36,7 @@
     }
 
     .el-scrollbar__bar.is-vertical {
-      right: 0px;
+      right: 0;
     }
 
     .el-scrollbar {