Remove scrollbars in Firefox

[tcitworld]

Firefox adds horizontal and vertical scrollbars due to

.fc * {
  box-sizing: content-box !important;
}

#1809 (comment)

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[georgehrke]

tl;dr:

• full-calendar is using a mix of border-box and content-box:
  
• the server is setting it to border-box:

#content[class*='app-'] * {
    box-sizing: border-box;
}

That breaks plenty of things including positioning of events

• We override the server css for fullcalendar and set it to content box:

.fc * {
    box-sizing: content-box !important;
}

Which is causing the scrollbar issue in Firefox.

[georgehrke]

Possible solution: https://caniuse.com/#feat=css-all

[georgehrke]

As a nasty side-effect, this is causing issues when trying to scroll hours in the time-picker: #2003

[georgehrke]

We can't use all.
The value we would have to use is revert, but that's not supported by Edge / Chrome: https://caniuse.com/#search=all%3A%20revert

[tcitworld]

I can't manage to get the scrollbars anymore with Firefox 73.0.1 on 2.0.1 or master, did I miss something?

[georgehrke]

We just hid them in #1809, but that's not a proper fix :)

[tcitworld]

Sorry, I'm forgetting stuff. /o\