diff --git a/src/wp-content/themes/twentyfifteen/css/editor-blocks.css b/src/wp-content/themes/twentyfifteen/css/editor-blocks.css
index 91595e6304..de9d103c81 100644
--- a/src/wp-content/themes/twentyfifteen/css/editor-blocks.css
+++ b/src/wp-content/themes/twentyfifteen/css/editor-blocks.css
@@ -597,6 +597,17 @@ p.has-drop-cap:not(:focus)::first-letter {
 	}
 }
 
+/* Search */
+
+.wp-block-search__button {
+	background-color: #333;
+	color: #fff;
+	font-family: "Noto Sans", sans-serif;
+	font-size: 14px;
+	font-weight: 700;
+	text-transform: uppercase;
+}
+
 /* Cover */
 
 .edit-post-visual-editor .editor-block-list__block .wp-block-cover-image p,