Building the web you build on @GoogleChrome β¨π¨ Web Experience DevRel Lead π¦ @csswg @openuicg. #CSSPodcast host π¬ una.im
Joined November 2008
- Tweets 31,144
- Following 1,444
- Followers 88,075
- Likes 42,206
3,004 Photos and videos
Jun 12
I'm in Europe: land of the content-blocking full-screen cookie banner.
How do you all use the internet like this all the time!?
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Jun 11
Neat anchor positioning thing:
(I'm implementing some interest-invoked popovers on my blog for internal links)
The "taller" tooltips don't fit in the viewport, so they get positioned above the link.
All of this is done with a few lines of CSS, a couple of HTML attributes, and is a progressive enhancement so they don't change the existing experience for non-supported browsers.
(I'm still working on the design/animations)
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Jun 11
Demo if you want to explore it yourself (hover or focus "contrast-color()")
codepen.io/una/pen/MYbRLaO
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Jun 9
Had a blast @Future_Frontend!
And tomorrow Iβm headed to Amsterdam for #CSSDay ππ
Will I see you there? π
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Jun 9
Customizable select is coming to Safari 27! π₯³
Want to try it out? Check out my demo collection: codepen.io/collection/BNZjPe
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Una πΊπ¦ retweeted
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Jun 8
Ooh interesting design detail. Really makes it feel like the top object is floating off the page.
Jun 7
Design Engineering Tip:
Separate the object from its shadow.
When an element lifts away from a surface, the shadow doesn't always need to move with it. Keeping the shadow grounded and fading it based on distance can create a stronger sense of depth and physicality.
Used carefully, this can make interfaces feel more tangible and less like layers floating on a screen. It's not something I'd apply everywhere, but for moments that need extra emphasis, it can be surprisingly effective.
js
const card = document.querySelector(".notification"); const shadow = document.querySelector(".shadow"); card.animate( [ { transform: "translateY(0)" }, { transform: "translateY(-160px)" }, ], { duration: 900, easing: "cubic-bezier(.64,0,.78,0)" } ); shadow.animate( [ { opacity: 0.5, transform: "scaleX(1)" }, { opacity: 0, transform: "scaleX(.35)" }, ], { duration: 700, easing: "ease-out" } );
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Jun 3
β
Nice little button scale-down on activation
π Layout change because scroll bar disappears
π No light dismiss
Let's fix it.
These UX problems can easily be solved with:
- dialog closedby="any"
- overscroll-behavior: contain
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Jun 3
Works in Chrome & FFβSafari still missing the overscroll-behavior on non-scrollable scroll containers change
Here's a demo of a similar interaction: codepen.io/una/pen/PwbRzdV
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Jun 1
The State of CSS survey is out!
It's shorter this year!
Please go take it!
survey.devographics.com/en-Uβ¦
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Una πΊπ¦ retweeted
Jun 1
To get good animations from an AI you need to get good at telling it what you want:
- "stagger this list of items"
- "make this animation direction-aware"
- "spacial consistency", "crossfade", "layout animation",
I made a motion vocabulary for this:
animations.dev/vocabulary
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May 28
Jamming out to my favorite high school music πΆ singing all the words out loud πΆ making some new CSS demos π» watching my baby sleep peacefully on the monitor πΆπ»
The dopamine is hitting π
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May 27
.@yui540 is my favorite recent follow on this platform. I just love their bouncy animation style! Always makes me smile π
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May 27
When people comment "why bother learning to code anymore?"
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May 26
Is there a way on @Spotify to turn on "Parent Mode" where it knows "sure I'll play Hop Little Bunnies and Baby Beluga occasionally, but I don't actually want that kind of music on my Discover Weekly?"
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May 26
This conversation nostalgically reminded me of an interview I did with my Dad (an industrial engineer) literally a decade ago. He works on hardware for large machinery, and codebases that live 20 years.
I think a lot of the same principles about simplicity still apply and will continue to matter in non-trivial systems design.
una.im/simplicity-in-eng
May 24
A lot of people are building with the assumption that the codebases we work in today will still matter next year.
Iβm not sure if thatβs the case.
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May 22
What's new in Web UI: 2026 Edition β¨
@bramus and I go over 35 new CSS, HTML, and JS features to help you build beautiful web experiences
Video just went live:
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May 20
Watch @bramus and I do a round up of Whatβs New in Web UI!
β¨ LIVE β¨ in 30 mins
See us at the #google Chrome tent
Stream it: io.google/2026/explore/pa-keβ¦
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