CSS version supported in preview pane

[antoniopaolini]

Operating system

Windows

Joplin version

2.13.15

Editor

Markdown Editor

What issue do you have?

Hello,
what is the supported css version in the preview pane?

I'm used to customize per note css to make documents or similar things.
Yesterday I tried to make a Valentine using this code:

Hello<style>
html {
   background:
   radial-gradient(at 80% 80%,#e7525b 25.4%,#0000 26%),
   radial-gradient(at 20% 80%,#e7525b 25.4%,#0000 26%),
   conic-gradient(from -45deg at 50% 41%,#e7525b 90deg,#78dbf0 0) 
      60px 0;
  background-size: 120px 120px;
}
</style>

This works fine in browser but not in Joplin.

Screenshots

[dpoulton]

I don't know about the css version but your css does appear to work in Joplin if you apply it to body rather than html.

[antoniopaolini]

Thanks, @dpoulton!
This open us to infinite possibility of personalisation, borrowing ideas from https://css-pattern.com/.