diff --git a/packages/block-library/src/gallery/style.scss b/packages/block-library/src/gallery/style.scss
index 9f2f59213f8af9..30450edbc7cc6d 100644
--- a/packages/block-library/src/gallery/style.scss
+++ b/packages/block-library/src/gallery/style.scss
@@ -52,12 +52,13 @@
 			font-size: $default-font-size;
 			left: 0;
 			margin-bottom: 0;
-			max-height: 100%;
+			max-height: 60%;
 			overflow: auto;
-			padding: 40px 10px 9px;
+			padding: 0 8px 8px;
 			position: absolute;
 			text-align: center;
 			width: 100%;
+			box-sizing: border-box;
 
 			img {
 				display: inline;