GitHub

Parsing id / class selectors that starts with a hyphen/ number

In CSS, identifiers (including element names, classes, and IDs in selectors) can contain only the characters [a-zA-Z0-9] and ISO 10646 characters U+00A0 and higher, plus the hyphen (-) and the ...
GitHub

CSS Specificity Issue: Unexpected Behavior with ID and Class Selectors

This repository demonstrates an uncommon issue in CSS related to the specificity of selectors. The unexpected behavior stems from the interaction between ID and class selectors within the same rule, ...
Search Engine Roundtable

Google On CSS .Class Selector

Google's John Mueller was asked if Google "looks at "CSS .Class" to comprehend the structure of a page; or a section of content that clarifies its SERP Features." John responded on Twitter saying "not ...
Poynter

How journalists can use selectors to harness the power of CSS

Editor’s note: This How To assumes a basic understanding of HTML. Along with HTML and JavaScript, CSS forms the foundation of the open Web. These three technologies power just about every website, and ...