diff --git a/src/core/Resources/assets/css/admin.scss b/src/core/Resources/assets/css/admin.scss
index b6044da..e2ee357 100644
--- a/src/core/Resources/assets/css/admin.scss
+++ b/src/core/Resources/assets/css/admin.scss
@@ -806,6 +806,8 @@ label.required::after {
   }
 
   .builder-add {
+    width: 100%;
+
     &-top {
       margin-top: 7px;
     }