Why does MDN look different?

MDN is changing to focus just on documenting web technologies. All the same great content is still here; we’re just changing some visual elements and navigation, to help you more quickly find the web technology docs you’re looking for.

But don’t worry, MDN and Mozilla are still together! In fact, we're updating MDN’s look to reflect Mozilla's new logo and colors.

Read more about the redesign in our blog post. Thanks for using MDN!

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  • Intersection Observer comes to Firefox

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    We began work on a developer tool to help with understanding and using CSS Grid over a year ago. In March, we shipped the first version of a Grid Inspector in the Firefox DevTools along with CSS Grid. Now significant new features are landing in Firefox Nightly. Here’s a tour ...

    Posted by Jen Simmons

  • Inspect, Modify, and Debug React and Redux in Firefox with Add-ons

    React, along with Redux, is one of the fastest and most flexible UI frameworks on the web. It’s easy to write, easy to use and is great for teams. However, it's not easy to debug them in the browser. Now, browser add-ons like React Developer Tools, Redux DevTools, and Vue ...

    Posted by Dustin Driver

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