CSS Tricks: How to Speed Up CSS Rendering | Onextrapixel – Web Design & Development Online Magazine.
In contrast to a more high level approach to organizing and implementing CSS, this article looks at the nitty gritty performance enhancements and bottlenecks you may be dealing with. Performance is always of high concern when engineering the front end, so it’s great to know the intricacies behind what causes a bottleneck or enhancement without doing it by accident.