Inline syntax highlighting includes unneeded style `-moz-tab-size:4`

[willfaught]

Is there an existing issue for this?

• [x] I have searched the existing issues

Describe the bug

Firefox now supports tab-size.

Note that Opera still requires -o-tab-size. Unfortunate.

To Reproduce

The Playground doesn't seem to have an inline style option.

[silverwind]

Note that Opera still requires -o-tab-size. Unfortunate.

Opera supports unprefixed since 2013-07-02 as per:

https://developer.mozilla.org/en-US/docs/Web/CSS/tab-size#browser_compatibility

I vote for removing all vendor prefixes.