perf[style]: refine css

src/components/LangSelect/index.vue

@@ -34,7 +34,7 @@ export default {
 .international-icon {
   font-size: 20px;
   cursor: pointer;
-  vertical-align: -5px;
+  vertical-align: -5px!important;
 }
 </style>
 

src/views/layout/components/Sidebar/index.vue

 <template>
   <scroll-bar>
-    <el-menu mode="vertical" :default-active="$route.path" :collapse="isCollapse" background-color="#304156" text-color="#fff" active-text-color="#409EFF">
+    <el-menu mode="vertical" :default-active="$route.path" :collapse="isCollapse" background-color="#304156" text-color="#bfcbd9" active-text-color="#409EFF">
       <sidebar-item :routes="permission_routers"></sidebar-item>
     </el-menu>
   </scroll-bar>