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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.

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.

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.

The inert HTML attribute enables you to make entire web page areas inaccessible.

Intl.Segmenter enables you to split strings into meaningful parts such as words, sentences and graphemes.

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

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

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