Please tell me which versions of Safari are officially supported.

[Taikono-Himazin]

There was a report that it cannot be displayed on safari13 (MacOS HighSierra).
Safari 13 is quite old (more than 5 years ago), so I think it's fine if it can't be displayed, but I don't know which version of Safari will work properly.
Is it written somewhere?

[Taikono-Himazin]

Please also tell us the supported versions of FireFox, Google Chrome, and Microsoft Edge.

[Henning Dieterichs (hediet)]

We only support the latest browser versions.