What is normalize.css?

Normalize.css is a small CSS file that you include at the top of your web project's stylesheet to make HTML elements render more consistently across different web browsers. Different browsers have their own built-in default styles for HTML elements, and those defaults vary in subtle and sometimes frustrating ways. A heading might be slightly larger in one browser, form elements might look different in another, and some elements behave unexpectedly on certain platforms. Normalize.css corrects these inconsistencies so your own CSS starts from a reliable, predictable baseline. It differs from a traditional CSS reset in a key way. A CSS reset wipes out all browser default styles entirely, leaving you to define every visual property from scratch. Normalize.css takes a more surgical approach: it only changes the things that are inconsistent across browsers, preserves default styles that are actually useful (like headings being visually distinct), and fixes specific known bugs rather than burning everything down. The file is well commented, explaining exactly what each rule does and why it exists, which makes it an educational resource as well as a practical tool. You would use normalize.css at the start of any web project where you want consistent cross-browser rendering without spending time debugging why a border or font behaves differently on different browsers or operating systems. It supports modern versions of Chrome, Firefox, Edge, Safari, and Opera, plus Internet Explorer 10 and above. The tech stack is pure CSS with no JavaScript dependencies. It is distributed as an npm package and also available via CDN for direct inclusion in HTML pages.