I was wrong to create the custom.css, I had create it in the "admin/assets/css" and not in "css" only.
Now it works, the header gets smaller gradually, great, thanks!
But can't see the lower part of header, it's cut. How can I lower the "line" that cuts the header and view the header full? The header height is 160px.
Thank you! 🙂
For 3/4 no problem, I was referring to the Logo and the Top banner, but now they are deactivated, I do not need them.