The article discusses the author’s nostalgic experience while researching a CSS feature called @namespace. The author stumbled upon a post regarding HTML5 Readiness, a website created by Paul Irish and Divya Manian that tracked browser support for several web features. The website, functional from 2010 to 2013, represented the support for each feature through a section of a rainbow.

Reflecting on the progress of web development since then, the author posits that if the website were updated today, the whole rainbow would be filled, indicating full support for all features. This prompts the author to create a similar tool, Web Readiness 2025, to track the progress of new and exciting features coming to HTML and CSS.

The tool’s current state is fairly empty, but the author hopes to see it grow over time as more features gain support. The original plan was to modify the web component made by the Chrome team to embed support data for a feature directly into the blog. However, the author realized that it would be laborious, so they opted to pull data from the Web Features API and display it themselves. All available features can be found in the GitHub repository.

The author also expressed their interest in learning more

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