diff --git a/packages/block-library/src/cover/style.scss b/packages/block-library/src/cover/style.scss
index babccb49bf5c0..fc9f05941b56e 100644
--- a/packages/block-library/src/cover/style.scss
+++ b/packages/block-library/src/cover/style.scss
@@ -172,10 +172,8 @@
 .wp-block-cover__image-background,
 .wp-block-cover__video-background {
 	position: absolute;
-	top: 0;
-	right: 0;
-	bottom: 0;
-	left: 0;
+	width: 100%;
+	height: 100%;
 	object-fit: cover;
 }