diff --git a/src/components/SearchGrade.vue b/src/components/SearchGrade.vue
index 4ea8384b60a31e14404c4e044be7b3a5ca950043..390c906f60e0031d793ee1140815d01b96348806 100644
--- a/src/components/SearchGrade.vue
+++ b/src/components/SearchGrade.vue
@@ -178,7 +178,7 @@ function initFirstData() {
       </a-table>
     </div>
     <div>
-      <div id="first" style="width:800px;height:900px;"></div>
+      <div id="first" style="width:80vw;height:900px;margin: 0 auto"></div>
     </div>
   </div>
 </template>