Hello, I sent you two photos so you can see what headerbar is.
I have not inserted the code because I do not know where to do it.
Excuse me, I don't know much yet.

Here is the documentation how ro add css code
www.joomlaplates.com/index.php/support/d...custom-css-in-joomla

Hi, I have followed the custom css creation video, but when creating the custom cssen joomla 3 file, it tells me the following: Warning
The security token did not match. The request was aborted to avoid any security breach. Retry.
If you can help me please.
Thank you.

Hello,
just create a custom.css in the css folder like shown below

Hello, I have put the CSS code where you told me, and it has not worked, the photos that are bacground like for example bottom-c.jpg, in the iphon you only see a piece, it is huge.
Thanks again for understanding me.