diff --git a/packages/block-editor/src/components/iframe/content.scss b/packages/block-editor/src/components/iframe/content.scss
index c6878ea1784a59..069274e66bdfd0 100644
--- a/packages/block-editor/src/components/iframe/content.scss
+++ b/packages/block-editor/src/components/iframe/content.scss
@@ -1,6 +1,6 @@
 .block-editor-iframe__body {
 	position: relative;
-	border-top: 0.01px solid transparent;
+	border: 0.01px solid transparent;
 }
 
 .block-editor-iframe__html {