diff --git a/styles/project.less b/styles/project.less
index 143cd6a5a8..c620c292da 100644
--- a/styles/project.less
+++ b/styles/project.less
@@ -15,6 +15,8 @@
     width: 23px;
     height: 23px;
     border-radius: @component-border-radius;
+    color: transparent;
+    overflow: hidden;
   }
 
   &-lock.btn {