How to make a button with a torn top border?

Question

css

Good afternoon, colleagues.
I ask you to help me make a button, as shown in the photo

. The upper border is torn closer to the right corner with a monolithic overall.
CONDITIONS:
There should be no additional nested elements. CSS only.
PLEASE
No 3 word answers like "Use SVG". Immediately complaint. Thank you for understanding.
Thank you in advance for your help.
If this question has already been described - please give a link to it.

Answer 1

If opaque, then white pseudo-elements.
If transparent, then the top border is not a border, but a 1 point high background gradient.