修改课程章节溢出

src/views/course/components/course-chapters.vue

@@ -264,7 +264,8 @@ const close = () => {
       生成图谱
     </el-button>
     <!-- <button @click="getChaptersList">获取</button> -->
-    <div class="custom-tree-container">
+     <el-scrollbar height="730px">
+      <div class="custom-tree-container">
       <el-tree
         style="max-width: 600px"
         :data="dataSource"
@@ -319,6 +320,8 @@ const close = () => {
         </template>
       </el-tree>
     </div>
+     </el-scrollbar>
+    
   </div>
   <el-dialog
     v-model="isAddchapers"