Let me preface this post with the following statement: Don’t use @import for CSS files! It blocks parallel downloading so your browser has to wait for the CSS files to load before moving on.

Unfortunately, sometimes you are stuck using @import and if you are also using Guard::LiveReload you will notice that your browser is not using the updated stylesheets when you save them.

To fix that simply set the apply_css_live option as false in your GuardFile

guard 'livereload', :apply_css_live => false do
  watch(%r{/*.php })
  watch(%r{sites/all/themes/rok3/css/*})
  watch(%r{sites/all/themes/rok3/images/*})
end

Guard::LiveReload will now do a full refresh of the browser instead of applying the CSS live. It’s a little clunkier than when you are using CSS from link tags but at least you don’t have to hit F5.