refactor: 视图字段快速删除样式优化

frontend/src/views/chart/components/drag-item/ChartDragItem.vue

@@ -257,7 +257,7 @@ export default {
 
   .item-span-style{
     display: inline-block;
-    width: 100px;
+    width: 80px;
     white-space: nowrap;
     text-overflow: ellipsis;
     overflow: hidden;