css: more spaces for heading

Author: sator-imaging

.docfx/template/public/main.css

@@ -212,7 +212,11 @@ article h1+.facts+.codewrapper.deprecated>pre>code {
 /** article */
 
 article h1,
-article h2 {
+article h2,
+article h3,
+article h4,
+article h5,
+article h6 {
     margin-top: 1.6rem;
 }
 
@@ -221,7 +225,11 @@ article h1+h2 {
 }
 
 article h1:first-child,
-article h2:first-child {
+article h2:first-child,
+article h3:first-child,
+article h4:first-child,
+article h5:first-child,
+article h6:first-child {
     margin-top: 0;
 }