Docs: Simplified h2/h3 margin rules

Author: jonashaag

docs/source/mongodbtheme/static/mongodb.css

@@ -132,10 +132,11 @@ h1, h2, h3, h4, h5, h6 {
 }
 h1 { font-size: 26pt; margin-bottom: 0; }
 h1 a.headerlink { display: none; }
+.body > .section > .section ~ .section { margin-top: 2em; }
 h2 { font-size: 20pt; margin-bottom: 0.3em; }
-h3 { font-size: 16pt; position: relative; top: 0.5em; margin-bottom: 0; padding-bottom: 0; }
-h2 + p { margin-top: 0; }
 h2 tt { font-size: 18pt; }
+h2 + *, h3 + * { margin-top: 4px; }
+h3 { margin-bottom: 0; }
 
 /* headerlink = the pilcrow (¶) showed besides headlines */
 .headerlink {