fix:样式问题;

Reviewed-on: #189

src/renderer/src/views/classManage/aside.vue

@@ -4,6 +4,7 @@
     class="el-menu-vertical-demo"
     :default-active="activeIndex"
     @select="handleSelect"
+    unique-opened
   >
     <template v-for="(item,index) in classList" :key="index">
       <el-sub-menu :index="`${index}`">

src/renderer/src/views/classManage/basicGroup.vue

@@ -1,5 +1,5 @@
 <template>
-  <el-card style="width: 100%;height: 100%">
+  <el-card style="width: 100%;height: 100%;overflow: auto">
 <!--    <template #header>-->
 <!--      <div class="card-header" style="text-align: left">-->
 <!--        <el-button type="primary" @click="addGroup">新建分组</el-button>-->

src/renderer/src/views/classManage/index.vue

@@ -2,8 +2,8 @@
   <div class="common-layout">
     <el-container>
       <el-aside style="width: 200px;margin-top: 20px">
-          <el-card style="width: 200px" class="el-card-demo" :style="{'min-height': (viewportHeight - 120) + 'px'}">
-            <div :style="{'max-height': (viewportHeight - 120) + 'px','overflow-y': 'auto'}">
+          <el-card style="width: 200px" class="el-card-demo" :style="{'min-height': (viewportHeight - 164) + 'px'}">
+            <div :style="{'max-height': (viewportHeight - 164) + 'px','overflow-y': 'auto'}">
               <Aside :menuItems="menuItems" :classList="classList" @handleSelect="handleSelect"></Aside>
             </div>
 <!--            隐藏操作按钮-->
@@ -19,9 +19,9 @@
             </template>
           </el-card>
       </el-aside>
-      <el-main :style="{'min-height': (viewportHeight - 160) + 'px'}">
+      <el-main :style="{'min-height': (viewportHeight - 204) + 'px'}">
 <!--        <router-view :style="{'height': (viewportHeight - 120) + 'px','overflow-y': 'auto'}" :key="route.path"></router-view>-->
-        <div :style="{'height': (viewportHeight - 120) + 'px','overflow-y': 'auto'}">
+        <div :style="{'height': (viewportHeight - 164) + 'px','overflow-y': 'auto'}">
           <!--        班级概况-->
           <ClassInfo v-if="currentIndex==0" :classId="classId"></ClassInfo>
           <!--        学生列表-->