Support all background image position options

[jonsage]

Is your feature request related to a problem? Please describe.
Currently there is no way to use calculated properties (CSS calc) in background images, or even use negative values. Also, the more extended options like "edge offset values" aren't supported, and there is no way to have multiple backgrounds on a single element (CSS supports this)

Describe the solution you'd like
I'd like to see the Fill panel support multiple background (like you can add multiple shadows in the shadow panel)

I'd also like to see more support for positioning - especially edge offset values.

https://developer.mozilla.org/en-US/docs/Web/CSS/background-position

Finally, there should be more options beyond "cover" and "contain".

Describe alternatives you've considered
Alternatives involve doing more work with additional shapes and constraints - which is fine, accept it means the code from Modulz is deviating from the ideal way the code would be written by a developer.

[colmtuite]

Thanks for this one too!

• We don't support calc for now. It's quite tricky because of space constraints. We'll consider it soon.
• Currently, this panel just supports a single value, so multiple background images are not possible. Just either a single Color or single Image. We will likely make it a multi-row panel soon.
• We will add support for negative values for background-position soon. Thanks for raising that!

Keep 'em coming 😄