https://github.com/web-platform-tests/wpt/pull/62042 @jamesnw this would probably also involve a mixed polyfill :/ No browser supports `match-parent` yet, but all support the rest of v1.
web-platform-tests/wpt#62042
@jamesnw this would probably also involve a mixed polyfill :/ No browser supports
match-parentyet, but all support the rest of v1.