@Antonium, sadly, the site in question is not a Xara design.

Are you after a Xara solution? If so raise a new Thread.
The approach was not done particularly well but the principle would appear to be a trigger on scroll position to show/hide the second blue banner.
A Xara design can approximate this with a trigger object.

The OP ought to have been pulled as it was a self-promoting, solitary first Post with no connection to any Xara products though Magix did get a mention.

Acorn