Issue: Are there any other properties that should be included here?

and all line decorations (underline, overline, line-through)

and emphasis marks ('text-emphasis')

applied to the text

/* Represent default spelling/grammar error styling in an adjustable way */

:root::spelling-error { text-decoration-line: spelling-error; }

:root::grammar-error { text-decoration-line: grammar-error; }

</pre>

UAs may apply additional effects to enhance the presentation

of highlighted content,

for example dimming content other than the highlighted text

or transitioning out a highlight style based on user interactions or timing.

These are not controlled by CSS.

for which that element is the <a>originating element</a>.

When multiple styles conflict,

the winning style is determined by the cascade.

When any supported property is not given a value by the cascade,

the corresponding <a>highlight pseudo-element</a>

of its <a>originating element</a>'s parent element.

This occurs regardless of whether that property is an <a>inherited property</a>,

including [=registered custom properties=] where the [=inherits descriptor=] is false.

<wpt>

css/css-pseudo/active-selection-051.html

css/css-pseudo/active-selection-052.html

css/css-pseudo/cascade-highlight-002.html

</wpt>