The project I've been working allows a theme developer to adopt bootstrap styles. One thing I don't like about bootstrap is having to subject the markup to boot

The project I've been working allows a theme developer to adopt bootstrap styles. One thing I don't like about bootstrap is having to subject the markup to bootstrap's classnames so I drop in bootstrap styles through mixins instead. Especially all the grid related class names don't seem elegant to me for building a WordPress theme (fine for a quick mockup/early stage site though). Let's say you want to have a wider sidebar, you'd have to change the php template file when it should be a simple tweak in the css.