Opacity attribute doesn't accept number as value


<img width="460" alt="Screenshot 2023-11-27 at 18 34 03" src="https://github.com/git-marcopitra/stylin.js/assets/37873239/384fa196-b699-4758-8759-db0235b6a392">

**Describe the bug**
When I run the app to see the result applied for opacity={0}, it's not displayed properly, but when put this way opacity="0" works well.
