A devtools extension to toggle support of selected CSS features for testing progressive enhancement fallbacks.
It saved me a lot of time checking the Graceful Degradation of my CSS. Thanks
Useful extension for testing how your site/app can look on browsers which don't support certain features.
iaderinokun
http://emmet.io/
https://visbug.web.app/
https://amino.dev
toptal.com
NCC Group Web Performance
https://schepp.dev/
Mike King
Kjeld Schmidt
iaderinokun
http://www.deque.com/
Accessibility Insights Team
