When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Chances are, if you've spent any time coding, you've come across CSS. But what is CSS, exactly?

CSS background images aren’t indexed by Google Image Search. Google recommends using HTML img or picture tags for meaningful visuals. Decorative images can remain in CSS if they don’t contribute to ...

CSS class names have no impact on SEO and aren't read as content by Google. Oversized CSS files can slow pages down and hurt Core Web Vitals scores. Google recommends keeping CSS crawlable to ensure ...

This text-based tutorial is intended for people who learn fast through a combination of reading and images — it’s possible to learn HTML and CSS foundations in 15 minutes through this tutorial. For a ...