Re: [csswg-drafts] [css-highlight-api] Ensuring that the height of ::highlight and ::selection match (#8363)

https://drafts.csswg.org/css-pseudo/#highlight-bounds

> For text, the corresponding overlay must cover at least the entire em box and may extend further above/below the em box to the line box edges.

https://drafts.csswg.org/css-highlight-api/#painting

> The painting of [custom highlights](https://drafts.csswg.org/css-highlight-api/#custom-highlight) is also handled identically to that of the built-in [highlight pseudo-elements](https://drafts.csswg.org/css-pseudo-4/#highlight-pseudo-element), as specified in [CSS Pseudo-Elements 4 § 3.4 Area of a Highlight](https://drafts.csswg.org/css-pseudo-4/#highlight-bounds) and [CSS Pseudo-Elements 4 § 3.6 Painting the Highlight](https://drafts.csswg.org/css-pseudo-4/#highlight-painting)

I guess this allows some highlights to be taller than others, but it doesn't look great.
CC @delan 

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Received on Saturday, 28 January 2023 20:11:17 UTC