That really depends on how quickly you can deprecate browsers that don't support modern features. https://en.wikipedia.org/wiki/Microsoft_Edge https://en.wikip

That really depends on how quickly you can deprecate browsers that don't support modern features. https://en.wikipedia.org/wiki/Microsoft_Edge https://en.wikipedia.org/wiki/Microsoft_Edge Edge is supposedly an option even back to Windows 7, though I don't believe it's a required security update. I haven't used a Windows 7 system in long enough that I'm not sure. https://caniuse.com/css-grid https://caniuse.com/css-grid At this point it is reasonable to tell people they NEED to install a more modern (and more security up to date!) web browser, be it Google Chrome, Microsoft Edge, or Mozilla Firefox.