W3Schools - W3Schools is a web developers information website, with tutorials and references on web development...
CSS Reference - Sleek and comprehensive online reference for CSS
MarkSheet - Browser-based guide and tutorial for HTML and CSS tutorial
Reactgo - It provides tutorials about, JavaScript, react.js , Vue js , angular etc
Awwwards - Awwards focuses on web design and has an awards system that highlights exceptional design.
Free Code Camp - Learn to code by helping nonprofits.