Getting Started with CSS Grid: Three Coding Approaches from Viget.
Understanding Specificity in CSS. Specificity in CSS refers to how browsers determine the importance, relevance, and “seniority” of CSS styles.
Beyond Browser Vendors - Brain Kardell. He explains what he thinks is potentially the most exciting set of changes that have taken place in the latter stages of the Web's history: Why we are now collectively considerably more in control of our own destinies and have moved "beyond browser vendors".