style：优化ui

src/layout/components/Navbar.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="navbar" :data-theme="sideTheme" :class="appStore.device">
+  <div class="navbar" :class="appStore.device">
     <hamburger id="hamburger-container" :is-active="appStore.sidebar.opened" class="hamburger-container" @toggleClick="toggleSideBar" />
     <template v-if="appStore.device == 'desktop'">
       <breadcrumb id="breadcrumb-container" class="breadcrumb-container" v-if="!settingsStore.topNav" />

src/layout/components/Sidebar/index.vue

@@ -2,7 +2,7 @@
   <el-aside :data-theme="sideTheme" class="sidebar" :class="{ 'has-logo': showLogo }">
     <logo v-if="showLogo" :collapse="isCollapse" />
 
-    <el-scrollbar :class="sideTheme" wrap-class="scrollbar-wrapper">
+    <el-scrollbar wrap-class="scrollbar-wrapper">
       <el-menu
         :default-active="activeMenu"
         :collapse="isCollapse"