One of the easiest ways to get started with CSS is to understand the core selectors, child selectors and descendant selectors. With these three concepts, you can move a lot of styling to CSS and out ...

The group recently published the Last Call Working Draft of "Selectors API," which are widely used in CSS, and are patterns that match against elements in a tree structure.

But you don’t need to use it, and your sites can still look good without it. How Do CSS and HTML Work Together? If you learned about the web a long time ago, or taught yourself the basics, you may be ...