Logo disapears behind the slider

on my homepage www.ovsl.de the Logo menu disapears behind the slider on the start page. at the inner sides, without slider the logo menu is in
front any idea to fix this?

Hi!

As I can see you have changed structure of html code and that's why some styles doesn't work for your website.

Actually, we don't provide any services for editing themes for individual users paid or unpaid. Anyway, you need to use "z-index" along with "position" property to fix this issue.
For example, for logo you need to replace the code:

.boxed-container.logoinside {
	padding:45px 0;
}

with:

.boxed-container.logoinside {
	padding:45px 0;
	z-index: 8;
}