What are the top 10 websites a web developer must see?

Stack Overflow (For Code that doesn’t work)

Hacker News

CodePen (Try out frontend code in the browser)

Confessions of an Unintentional CTO (Holistic advice about general web development)

Mozilla Developer Network

Learn Front-End & Full-Stack Development

World Wide Web Consortium (W3C)

CSS-Tricks (THE place to go for CSS tips)

GitHub (Massive repository of open-source code)

Courtesy of Quora