Index: src/wp-content/themes/twentytwentyone/assets/sass/04-elements/media.scss
===================================================================
--- src/wp-content/themes/twentytwentyone/assets/sass/04-elements/media.scss	(revision 50343)
+++ src/wp-content/themes/twentytwentyone/assets/sass/04-elements/media.scss	(working copy)
@@ -1,7 +1,7 @@
 img {
-	display: block;
 	height: auto;
 	max-width: 100%;
+	vertical-align: middle;
 }
 
 /* Classic editor images */
Index: src/wp-content/themes/twentytwentyone/assets/sass/05-blocks/image/_style.scss
===================================================================
--- src/wp-content/themes/twentytwentyone/assets/sass/05-blocks/image/_style.scss	(revision 50343)
+++ src/wp-content/themes/twentytwentyone/assets/sass/05-blocks/image/_style.scss	(working copy)
@@ -35,12 +35,6 @@
 	}
 }
 
-img {
-	height: auto;
-	max-width: 100%;
-	vertical-align: middle;
-}
-
 // Block Styles
 .wp-block-image.is-style-twentytwentyone-border img,
 .wp-block-image.is-style-twentytwentyone-image-frame img {