In Bootstrap what are these fake horizontal rules beneath headers?

Question

There's an example of what I mean on some of Bootstrap's own pages: http://getbootstrap.com/components/ Under the header text "Glyphicons" see how there's a 1px high grey horizontal line? It's some divider that gets automatically inserted under headers but I can't figure out what style property needs to be changed to fix it. Thanks.

Answer 1

You need to override the .page-header class, if you're looking to remove it then do this in a stylesheet loaded after the bootstrap styles:

.page-header { border-bottom:none; }