[V5] - Same className in V4 display different in V5

[albertcito]

Describe the bug
This is the component in v4 and v5. Both of them are exactly the same. But those look different:

V4	V5

Reproduction

Thar repo has both v4 and v5.

https://github.com/albertcito/nativewinds/

[jcannon98188]

v5 uses tailwind 4. Tailwind 4 is not 100% compatible with Tailwind 3. I haven't looked at the examples and compared it to the documentation, but I would be pretty confident that this is due to class names being different between the two versions of tailwind.

[danstepanov]

Closing this as expected behavior. Nativewind v5 uses Tailwind CSS v4 under the hood, while v4 used Tailwind CSS v3. The visual differences you're seeing are from changes in Tailwind's defaults between those major versions (e.g. border color, ring width, shadow behavior). See the Tailwind v4 upgrade guide for class-level changes.