Expand "paste in" CSS feature

[permaslug]

Description

Right now, we have the option to paste in CSS for all items in the "Effects" panel (box-shadow, transitions, etc) so expanding that to any available styling control would be a logical next step.

This would massively speed up development for all users, whether you're copying in CSS you find elsewhere or writing it by hand in a separate stylesheet, but want the values available in the UI.

Ideally this feature would let you paste in an entire CSS rule and it apply each property/value inside that global style to the corresponding UI element.

[iansvo]

@diggeddy I have actually had a technical concept mapped out for how we could import stylesheets into the styles builder and it could end up being a really awesome feature. We could give people a stylesheet and say "yo, add this to your site" and it'll fire it up with styles, makes it easy to share things, import stuff you already did, etc.

Happy to discuss it, let me know.

[ifrountas]

Yes @iansvo this would be awesome. This stylesheet should be a "design system". Please count me in into this conversation.