Today we’ll experiment some more with the adjacent and general sibling combinator and the :checked pseudo-class. Using hidden inputs and labels, we will create an accordion that will animate the content areas on opening and closing.
Making shapes with clipping paths in CSS
The Dark Corners of Your UI
A good article when considering mobile typography
Excellent article on style guides
A look at good and bad uses of off canvas UX patterns
The Importance of Having a Brand Platform
Device-Agnostic - A great post by Trent Walton
Pretty nice looking font icons, might be worth a try?