Defensive CSS
I spent years teaching CSS layout on this blog. I put everything I know into The Layout Maestro course: 70+ lessons and 150+ interactive examples that teach you how to think CSS layouts, not just memorize syntax. 👋 This article has been expanded into a new project called Defensive CSS. Due to the fact that the content here will not be updated, I recommend you to read defensivecss.dev instead. Oft
Debugging in CSS means figuring out what might be the problem when you have unexpected layout results. Today, Stephanie Eckles will look at a few categories bugs often fit into, see how you can evaluate the situation, and explore techniques that help prevent these bugs. We’ve all been there, at the end of completing CSS for a layout and — what’s that? Ah! An extra scrollbar! Or maybe an element is
UPDATE October 2024: Since this article was published, members of the CSS Working Group have concluded that all of the grid abilities described here — variable-width tracks, explicit placement, spanning, and subgrids — are worth including in masonry layout, and are possible to implement performantly. There is now an official W3C Working Draft for CSS Grid Layout Module Level 3 documenting how it w
Conditional CSS
Do you want to master CSS layouts? I'm building a new course. Learn more I like to think of CSS as a conditional design language. Over the years, CSS was known as a way to style web pages. Now, however, CSS has evolved a lot to the point you can see conditional rules. The interesting bit is that those CSS rules aren’t direct (i.e: there is still no if/else in CSS), but the way features in CSS work
Feb 1, 2023 by Jon Davis, Tim Nguyen and Jen Simmons A year ago, Apple, Bocoup, Google, Igalia, Microsoft, and Mozilla came together to improve the interoperability of the web and to continue our commitments to web standards — actions that ensure the web will work in any browser, on any operating system, with any computer. Throughout last year, Interop 2022 focused on fifteen key areas of most imp
Do you want to master CSS layouts? I'm building a new course. Learn more Looking at a layout at first glance might imply that it’s easy and straightforward to build. The moment you start building the initial layout, you will face challenges that you didn’t think about in your initial look at the design. In this article, I will rethink how to build the featured news section on Vox.com and try to se
What's New In DevTools (Chrome 98) | Blog | Chrome for Developers
Preview feature: Full-page accessibility tree The new Full-page accessibility tree makes it easier for you to get an overview of the full-page accessibility tree and help you better understand how your web content is exposed to assistive technology. In the Elements panel, open the Accessibility pane and select Enable full-page accessibility tree checkbox. Then, reload DevTools and you will see a n
WebKit Features in Safari 26.0
Sep 15, 2025 by Jen Simmons, Saron Yitbarek, Jon Davis, Tim Nguyen, Blaze Burg, Marcos Cáceres, Razvan Caliman, Qianlang Chen, Karl Dubost, Kiet Ho, David Johnson, Aditya Keerthi, Daniel Liu, Keith Miller, Abrar Rahman Protyasha, Richard Robinson, Kiara Rose, Ahmad Saleem, Anne van Kesteren, Brian Weinstein, Eddy Wong, Luming Yin, Brandel Zachernuk ContentsCSSEvery site can be a web app on iOS and
Migrating to v5
Track and review changes to the Bootstrap source files, documentation, and components to help you migrate from v4 to v5. Dependencies Dropped jQuery. Upgraded from Popper v1.x to Popper v2.x. Replaced Libsass with Dart Sass as our Sass compiler given Libsass was deprecated. Migrated from Jekyll to Hugo for building our documentation Browser support Dropped Internet Explorer 10 and 11 Dropped Micro
I spent years teaching CSS layout on this blog. I put everything I know into The Layout Maestro course: 70+ lessons and 150+ interactive examples that teach you how to think CSS layouts, not just memorize syntax. In this new article about my rebuilding a layout, I’m exploring TechCrunch. I had a quick look at it and thought it would be interesting to dive in and see how modern CSS can make things
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A Guide To CSS Debugging — Smashing Magazine
Help us invent CSS Grid Level 3, aka “Masonry” layout
Interop 2023: Pushing interoperability forward
Rebuilding a featured news section with modern CSS: Vox news
Case Study: Rebuilding TechCrunch layout with modern CSS