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Additive Animations in CSS


Daniel C. Wilson explains how with CSS @keyframe animations, when multiple of them are applied to an element, they do both work. But if any properties are repeated, only the last one works. They override each other. I’ve seen this limitation overcome by applying keyframes to nested elements...

In Defense of Tables and Floats in Modern Day Development


Twenty-plus years ago, tables were the main way web pages were created in HTML. It gave web builders consistent control of constructing pages with some “design.” No longer did sites only have to be top-to-bottom in a linear manner — they could be set up with columns that align left-to-right...

More on content-visibility


Back in August 2020, when the content-visiblity property in CSS trickled its way into Chrome browsers, Una Kravets and Vladimir Levin wrote about it and we covered it. The weirdest part is that to get the performance value out of it, you pair it with contain-intrinsic-size on these big chunks...

Awesome Demos Roundup #18


A big selection of the best web experiments made in the past weeks. The post Awesome Demos Roundup #18 appeared first on Codrops

Core Web Vital Tooling


I still think the Google-devised Core Web Vitals are smart. When I first got into caring about performance, it was all: reduce requests! cache things! Make stuff smaller! And while those are all very related to web performance, they are abstractly related. Actual web performance to users are things...

UI Interactions & Animations Roundup #11


A new hand-picked collection of great web motion design concepts, UI interactions and animations. The post UI Interactions & Animations Roundup #11 appeared first on Codrops

cookieStore: Async Cookie API


One pattern in the JavaScript API world that web development veterans will notice is that we’ve been creating new methods to accomplish what older, grosser APIs once achieved. XMLHttpRequest became the fetch API, some APIs like Battery became async, and there are dozens of other examples....

The failed promise of Web Components


Lea has some words: Perusing the components on webcomponents.org fills me with anxiety, and I’m perfectly comfortable writing JS — I write JS for a living! What hope do those who can’t write JS have? Using a custom element from the directory often needs to be preceded by a ritual of...

Our Best Posts on Web Components


A grouping of hand-selected posts from our site about Web Components. We've published a very useful article series from Caleb Williams, so that's here, but also sprinkled in some other informational and link posts on the subject. The post Our Best Posts on Web Components appeared first...

Focus management and inert


Many forms of assistive technology use keyboard navigation to understand and take action on screen content. One way of navigating is via the Tab key. You may already be familiar with this way of navigating if you use it to quickly jump from input to input on a form without having to reach for your...

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