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

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

Intl.NumberFormat supports localized currency and unit formating.

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

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

Hone your craft to be better than average.

The CSS zoom property, unlike scale, affects an element's layout size, not just its visual appearance.

Today I learned that cross-origin module scripts require CORS handling and a Access-Control-Allow-Origin response header.

The new field-sizing CSS property allows inputs, selects and textareas to grow depending on their content.

Thoughts on stage fright.