ui优化

src/modules/question/components/KnowledgePoints.vue

@@ -11,13 +11,14 @@
     <el-dialog
       :visible.sync="showDialog"
       title="绑定知识点"
-      top="10vh"
+      top="5vh"
       width="640px"
       :close-on-click-modal="false"
       :close-on-press-escape="false"
       append-to-body
       destroy-on-close
       @open="whenOpen"
+      custom-class="knowledge-dialog"
     >
       <el-tree
         ref="tree"
@@ -197,4 +198,10 @@ export default {
     }
   }
 }
+:deep(.knowledge-dialog) {
+  .el-dialog__body {
+    max-height: calc(95vh - 125px);
+    overflow: auto;
+  }
+}
 </style>