优化避免鼠标移出时无法隐藏滚动条的问题

src/assets/styles/sidebar.scss

@@ -1,7 +1,7 @@
 #app {
 
   .main-container {
-    min-height: 100%;
+    height: 100%;
     transition: margin-left .28s;
     margin-left: $base-sidebar-width;
     position: relative;

src/layout/index.vue

@@ -1,17 +1,17 @@
 <template>
   <div :class="classObj" class="app-wrapper" :style="{ '--current-color': theme }">
-    <el-scrollbar>
-      <div v-if="device === 'mobile' && sidebar.opened" class="drawer-bg" @click="handleClickOutside"/>
-      <sidebar v-if="!sidebar.hide" class="sidebar-container" />
-      <div :class="{ hasTagsView: needTagsView, sidebarHide: sidebar.hide }" class="main-container">
+    <div v-if="device === 'mobile' && sidebar.opened" class="drawer-bg" @click="handleClickOutside"/>
+    <sidebar v-if="!sidebar.hide" class="sidebar-container" />
+    <div :class="{ hasTagsView: needTagsView, sidebarHide: sidebar.hide }" class="main-container">
+      <el-scrollbar>
         <div :class="{ 'fixed-header': fixedHeader }">
           <navbar @setLayout="setLayout" />
           <tags-view v-if="needTagsView" />
         </div>
         <app-main />
         <settings ref="settingRef" />
-      </div>
-    </el-scrollbar>
+      </el-scrollbar>
+    </div> 
   </div>
 </template>