Bootstrap 3 introduces some pretty weird markup IMO. Foundation is a bit better, but I'm going to suggest something unpopular, which is to use a lighter-weight framework like http://purecss.io/ or http://cardinalcss.com/ instead.
PureCSS really needs to improve its markup. I tried using it but soon found my CSS littered with 'pure-' everywhere. And the grid is really "unsemantic" (?). It might just be my personal opinion, but I really disliked it.
