• Writing efficient CSS selectors http://csswizardry.com/2011/09/writing-efficient-css-selectors/ 40 comments 28/2/2013
• Please don’t write “efficient” CSS http://clipperhouse.com/blog/post/Please-dont-write-efficient-CSS.aspx 2 comments 31/5/2010

• "Writing efficient CSS - Web developer guide" - Most of it is relatively obvious, but good to refresh the head with. https://developer.mozilla.org/en-us/docs/web/guide/css/writing_efficient_css 31 comments 19/9/2013 web_design