Hello Leonid

Please share a screenshot of your issue to understand it better.

Best regards

I mean, which addon should I choose to make the underlined header ? https://www.joomshaper.com/page-builder/blocks

Unfortunately, you can't attach a screenshot here in the feedback form, so I sent it by mail

You can try Navigation Addon for creating menu. Please explore the addons so that you might find better ideas. Take a screenshot and share via any platform. For example: Lightshot or Imgur