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Apparently there are invalid types (see #9534):
> type can accept any idents, except 'none' or '-ua-' prefixes
I would suggest throwing a TypeError or a SyntaxError when these are used in DOM APIs…
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In the [smooth-scrolling section of the CSSOM-View spec draft](https://drafts.csswg.org/cssom-view/#smooth-scrolling), the following is written:
> `auto`
> The scrolling box is scrolled in an i…
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https://github.com/w3c/csswg-drafts/issues/3433 merging this into CSSOM was resolved in 2021, so anyone referring to the WICG draft is looking in the wrong place. Except there's nothing in that draft …
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The history.back(); in this test triggers a back navigation in Chrome and WebKit. In Firefox it seems to be a same-document navigation.
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The spec requires adopted stylesheets to also be included in `styleSheets` property, apparently inadvertently.
The Constructable Stylesheets spec says:
> The user agent must include all style shee…
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Asides from the edits already done in https://github.com/w3c/csswg-drafts/issues/866, @tabatkins mentioned that:
> the remaining detail for how legacy shorthands work needs to show up in CSSOM, spe…
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https://drafts.csswg.org/cssom/#serialize-a-css-declaration-block
The spec currently tries to serialize properties with the minimal set of component values, i.e. omitting optional ones that are the…
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In https://wicg.github.io/spatial-navigation, I've found myself wanting to refer to a scroll-able thing that isn't already scrolled to the maximum. (and in my case, I only cared about manually scrolla…
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I could not find a defintion that states how `getComputedStyle()` is supposed to work for fragmented elements.
`getComputedStyle()` returns the resolved value. In some cases, that corresponds to th…
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I was curious about how circular and repeated imports behave. I checked the definition of [@import](https://drafts.csswg.org/css-cascade-3/#at-import) in CSS Cascading and Inheritance Level 3.
My u…