diff --git a/edit-post/components/meta-boxes/meta-boxes-area/style.scss b/edit-post/components/meta-boxes/meta-boxes-area/style.scss
index b25f0c693f290..1b92ba3565712 100644
--- a/edit-post/components/meta-boxes/meta-boxes-area/style.scss
+++ b/edit-post/components/meta-boxes/meta-boxes-area/style.scss
@@ -9,7 +9,8 @@
 	 * other elements (such as .button) are unaffected by Gutenberg's style
 	 * because of their higher specificity.
 	 */
-	* {
+	&__container,
+	.inside {
 		box-sizing: content-box;
 	}