diff --git a/block-styles.css b/block-styles.css
index 594cc9e..9c1eb51 100644
--- a/block-styles.css
+++ b/block-styles.css
@@ -29,6 +29,10 @@
 }
 
 /* For the "Markdown-style Heading" block style */
+.is-style-markdown-heading {
+  margin-bottom: 1em;
+}
+
 .is-style-markdown-heading a {
   display: inline;
 }