Format th to get improved text padding.

Author: davidlehn

index.html

@@ -111,7 +111,7 @@
   .comment {
     color: #999;
   }
-  table, thead, tr, td {
+  table, thead, tr, td, th {
     padding: 5px;
     border-width: 1px;
     border-spacing: 0px;