The Secrets of the CSSOM & Why You Should Care

How browsers render & style a page

I spent a handful of year building websites without knowing how exactly one is rendered. I’d hear things about “painting” and “layout,” but I never really felt like I needed to dive into it in order to do my job.

I was wrong (kind of).

Sure, you can get by having a passing knowledge of how browsers create the page, but understanding the details helps you step up your game. It helps you optimize performance, and make more informed decisions…