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CSS custom properties don't work in media queries. Custom media queries could help out here but unfortunately, they're not supported yet.

em and strong elements are not announced by assistive technologies such as screen readers.

The HTMLInputElement has a lot of properties that you might now use every day or even have heard of. This article describes defaultValue, indeterminate and selection properties.

How to use 'git status --short/-s' to get shorter and easier to grasp status information but 'git status --porcelain' when you build automation with it.

Use Twitter's "hidden" embed API to statically prerender Tweets on your sites.

Drop outdated font declarations and load the operating system default font with system-ui.

Many people treat the ARIA Authoring Practices Guide (APG) as source of truth about building accessible websites and implementing accessible components and widgets. Eric highlights why the guide isn't the source of truth and why it never was supposed to be.

In modern browsers there's no need to define rel="noopener" because it's set automatically.

The new dialog element is more than a display toggle because it provides better focus handling, inert functionality and closes on keypress.

Line breaks and tabs are automatically removed from URLs when used in links or URL constructors.