css: Reduce space between title and hbar by half

Signed-off-by: Eileen Yoon <eyn@gmx.com>

Author: eiln

static/css/main.css

@@ -903,7 +903,7 @@ body.landing #documentation {
 
 .post h1, .post h2 {
     margin-bottom: 20px;
-    padding-bottom: 20px;
+    padding-bottom: 10px;
     border-bottom: 1px solid #999999;
     margin-top: 30px;
 }