The free 3 W3C MarkUp Validation Service and 4 W3C CSS Validation Service ensure that your pages meet the exact specifications established by the W3C. The MarkUp Validation Service checks for ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Jinsong Yu shares deep architectural insights ...

Want to find out how magically terrible your web code is? Just ask the Unicorn. The web's governing body has launched a new validation tool called Unicorn that checks the quality of your website's ...

I’ve been writing HTML since the late ‘90s, and while the web has evolved in a hundred different ways, the core of it really hasn’t. You still open a file, structure your markup, style it with CSS, ...