Stile sheet - user.css Template Outdoor_life - Joomla 4

Good morning,

We are trying to include in the template Outdoor_life (for Joomla 4) a custom css to adapt it.

We have seen in several tutorials that in Joomla 4 custom.css has been named user.css

We included a user.css but it doesn't work.
Could you help us with this?

Enclosed herewith I send you a screenshot.

Thanks in advance.
Best regards

That's user.css is used for default Joomla template, with Shape5's templates, you can create 'custom.css' file