diff --git a/docs/prune-simulator/documentation.html b/docs/prune-simulator/documentation.html
index bcc0c42f..9c8b4eb7 100644
--- a/docs/prune-simulator/documentation.html
+++ b/docs/prune-simulator/documentation.html
@@ -15,10 +15,16 @@
         font-family: 'Open Sans', sans-serif;
         font-size: 17px;
     }
-    h1, h2, h3 {
+    h1, h2, h3, h4, h5, h6 {
+        color: #2a2b2c;
         font-family: Lato, sans-serif;
+    }
+    h1, h2, h3 {
         font-size: 150%;
-        line-height:1.2
+        line-height: 1.2;
+    }
+    h4, h5, h6 {
+        font-size: 125%;
     }
     tt, code {
         background-color: #ecf0f3;