diff --git a/umap/static/umap/base.css b/umap/static/umap/base.css
index e7ceca9d..20705883 100644
--- a/umap/static/umap/base.css
+++ b/umap/static/umap/base.css
@@ -61,10 +61,16 @@ kbd {
   white-space: nowrap;
 }
 h3 {
-    font-size: 1.2rem;
+    font-size: 1rem;
 }
 h4 {
-    font-size: 1.1rem;
+    font-size: 0.9rem;
+}
+h5 {
+    font-size: 0.8rem;
+}
+h6 {
+    font-size: 0.7rem;
 }
 hgroup > * {
     margin-bottom: 0;