Right now, parser will throw even in the case of :is() pseudo-class that contains an invalid selector (even if there are other valid selectors).
That pseudo-class apparent accepts a forgiving selector list: https://developer.mozilla.org/en-US/docs/Web/CSS/:is#forgiving_selector_parsing
For example, in the following case css will still apply to valid selectors
:is(ol, ul, ??$#$@#) {
color: green;
}
Right now, parser will throw even in the case of
:is()pseudo-class that contains an invalid selector (even if there are other valid selectors).That pseudo-class apparent accepts a forgiving selector list: https://developer.mozilla.org/en-US/docs/Web/CSS/:is#forgiving_selector_parsing
For example, in the following case css will still apply to valid selectors