Forum:CSS Help Border-Bottoms

On my wiki, The bottom border lines on my titles and main page ( and names of pages format) are not working. They are not showing those bottom-border lines underneath the text. I tried monkeying with the css but it's not working... eh, help?

Anr0328 23:11, July 14, 2011 (UTC) : )
 * I got started looking into it but that wiki has the new editor active.
 * Goodbye.
 * 02:00, July 15, 2011 (UTC)
 * 02:00, July 15, 2011 (UTC)