Android 5.0 Map is not defined

This would be a nice little feature to have, Excel users are using this a lot.

Calendar legend labels are not visible in dark theme

To Reproduce

1. Go to https://nivo.rocks/calendar/
2. Click on 'light/dark' switch and enable dark mode
3. See legend texts

Expected behavior
legend texts should have same fill color as year/month labels and be at least visible

Screenshots

<img width="1163" alt="Bildschirmfoto 2020-10-09 um 15 35 53" src="https://

Is your feature request related to a problem? Please describe.
Data validation does not support this reference to other cells

cc @mikewest @annevk @ericlaw1979

From https://html.spec.whatwg.org/multipage/system-state.html#normalize-protocol-handler-parameters:

'If the resulting URL record's scheme is not "https" or the resulting URL record's origin is not same origin with environment's origin, then throw a "SecurityError" DOMException.'

It seems this forbids localhost URLs like http://127.0.0.1 that are in a se