Talk on CSS Anchor Positioning
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Anchors Aweigh! (2026.02.26 @ PHP Antwerp)
Talk on CSS Anchor Positioning.
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Chrome 145 146 adds Experimental Support for Vertical Tabs
Vertical Tabs are available behind a flag in Chrome 145 (current beta)
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Using 100vw is now scrollbar-aware (in Chrome 145+, under the right conditions)
From Chrome 145 onwards, 100vw will automatically subtract the size of the (vertical) scrollbar from it if you have forced the html element to always show a vertical scrollbar (using overflow[-y]: scroll) or if you reserve space for it (using scrollbar-gutter: stable). The same applies to vh with a horizontal scrollbar, as well as all small, large, and dynamic variants.
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How to Find the public WebKit Bug from the Apple-internal rdar:// Bug ID
If you read the Safari release notes – like the Safari 26.2 release notes – you see a lot of trailing “(12345678)”-mentions in the list of fixed bugs. These numbers are Apple-internal bug IDs, as used within Apple’s internal bug tracker (fka?) named “Radar”.
These numbers are not linked to anything because Radar is Apple-internal, so to external people these numbers are practically useless … or are they?
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CSS Scroll-Triggered Animations are coming to Chrome!
We have Scroll-Driven Animations. Now say hi to Scroll-Triggered Animations.
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CSS Wrapped 2025
Once again, it has been an AMAZING year for CSS and UI. To celebrate this, we – the Chrome CSS/UI DevRel Team – created another edition of CSS Wrapped!
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The Google Antigravity website, rebuilt with Modern CSS
As an experiment to see if Modern CSS is up to the task, I recreated the Google Antigravity website with Modern CSS.
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Anchor Positioning and the Inset-Modified Containing Block (IMCB)
If you kinda understand Anchor Positioning, but it still surprises you from time to time, then most likely this is the missing piece of information: the Inset-Modified Containing Block (or IMCB for short).
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Use overscroll-behavior: contain to prevent a page from scrolling while a <dialog> is open
Chrome 144 features a small change to overscroll-behavior: it now also works on non-scrollable scroll containers. While this change might seem trivial, it fixes an issue developers have been dealing with for ages: prevent a page from scrolling while a (modal) <dialog> is open.
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Señors @ Scale: Modern CSS at Scale with Bramus
A while ago I joined Dan Neciu – whom I met at Frontmania in 2023 – on his “Señors @ Scale” podcast. We talked about all things CSS.
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Anchor Positioning is transform-aware in Chrome 144+
Starting with Chrome 144, Anchor Positioning is going to be transform-aware. From then on, anchoring will resolve against the bounding box of the transformed ancho