The :not (X) property in CSS is a negation pseudo class and accepts a simple selector as an argument. Essentially, its just another selector of any kind. :not matches an element that is not ...

CSS :has () pseudo-class selector issue with class targeting and specificity causing unexpected styling behavior. The problem is that the selector's specificity might not be enough to override other ...

Google’s Search Relations team explains how CSS affects SEO, addressing myths about class names, pseudo elements, and page performance.