diff --git a/src/pages/regulatoryRepository/dataCenter/index.vue b/src/pages/regulatoryRepository/dataCenter/index.vue
index 72f3bf9fb..e050e9154 100644
--- a/src/pages/regulatoryRepository/dataCenter/index.vue
+++ b/src/pages/regulatoryRepository/dataCenter/index.vue
@@ -812,7 +812,6 @@ export default {
   display: flex;
 }
 #left {
-  width: calc(30% - 5px);
   height: 100%;
   float: left;
 }