aspect-ratio not working

[EmpireJones]

I'm not 100% sure that this syntax is valid, but some tool I'm using is converting "aspect-ratio: 3000 / 3000;" to "aspect-ratio:3e3/3e3".

This results in the errors:

• "aspect-ratio": Unknown dimension.
• "aspect-ratio": "/" is not a "aspect-ratio" value.

According to https://developer.mozilla.org/en-US/docs/Web/CSS/number, scientific notation should be valid for CSS numbers.