Submenu in the sitebare is pushed all the way down on the iPhone

Good Morning,

On the page https://www.dres-harth.de/ueber-uns/ there is a submenu, "Team, Our Practice ...".

If you look at the page on the iPhone, this submenu is only displayed at the very end under the last photo.

What do I have to do to get this menu to the top?

If you as a user do not look at all the photos, you do not suspect that there will be a menu on the iPhone.

Thanks