I'm asking for advice. Why do I see a header and a sticky header at the same time after loading the website? When I scroll web page then sticky header disappear. Thank you.
Joomla 4.3.0
PHP 8.0.28
Framework Version: 2.6.4
Template Version tp_wedding: 1.3.13
UIkit 3 Slideshow 1.2.7

Live Url please

I thought there was a problem with the local XAMPP installation. Same problem on web hosting.

www.fpcie.com/newweb/

I cant see any problem with the sticky header.
And there is not enough content to get the sticky header

When I go to the top of the website and refresh, the sticky header on top appears. This incorrect display of the sticky header disappears only when I edit the "Header Section Main Menu" (Layout) and in the "design settings" tab I set the "margin top" to -70px, but then it is not aligned with the bottom. In an older version (Framework Version: 2.5.4,
Template Version: 1.3.1) everything worked normally and the "margin top" setting didn't matter. Thank you