update

src/views/live/teacher/index.vue

@@ -174,6 +174,7 @@
       title="分组讨论组数"
       top="30vh"
       width="300px"
+      class="dialog-group"
       :visible.sync="dialogVisibleGroup"
       :close-on-click-modal="false"
     >
@@ -581,7 +582,7 @@ $live-bc: #3d3938;
   @include container;
   @include dialog;
 
-  .el-dialog__body {
+  .dialog-group .el-dialog__body {
     height: 65px;
   }