diff --git a/packages/block-library/src/media-text/editor.scss b/packages/block-library/src/media-text/editor.scss
index b417fb951e99d0..46af249b582002 100644
--- a/packages/block-library/src/media-text/editor.scss
+++ b/packages/block-library/src/media-text/editor.scss
@@ -40,3 +40,9 @@
 .wp-block-media-text--placeholder-image {
 	min-height: 205px;
 }
+
+@media screen and (min-width: 600px) {
+	.wp-block-media-text .components-placeholder__fieldset {
+		width: auto;
+	}
+}