fix: css !mt-5 (#2573)

src/views/demo/page/form/high/index.vue

@@ -10,7 +10,7 @@
     <a-card title="任务管理" :bordered="false" class="!mt-5">
       <BasicForm @register="registerTask" />
     </a-card>
-    <a-card title="成员管理" :bordered="false">
+    <a-card title="成员管理" :bordered="false" class="!mt-5">
       <PersonTable ref="tableRef" />
     </a-card>