notes/node_modules/doiuse/test/cases/unimplemented/fullscreen.css

:fullscreen {
    background: black
}

[href=:fullscreen] {}

:fullscreen a {
    box-sizing: border-box
}

:fullscreen a {
    color: black
}

:-moz-full-screen a {
    transform: translate3d(0, 0, 0);
}