Feature queries are supported by Chrome 63+, Microsoft Edge 16+, Firefox 57+, Safari 11+, iOS Safari 11.2+, Chrome for Android 62+, and UC Browser for Android 11.4+. There's no support for IE, but it doesn't really matter.
This article shows how to use feature queries in CSS, and how they work even with older browsers that don't even know they're there.
vhvalue is supported, the viewport height of the browser, rather than the height of the page. If so, it sets the
The following example shows real world use of feature queries.
100%, unless the browser supports the
vhvalue. Older browsers will simply ignore the
not operator is also supported.