diff --git a/src/pages/login/index.less b/src/pages/login/index.less
index cbe653a9..8ab159a6 100644
--- a/src/pages/login/index.less
+++ b/src/pages/login/index.less
@@ -97,4 +97,5 @@
 
 .extra {
   margin-top: 20px;
+  width: 340px;
 }