I want my lower divbox so that it docks with my upper one

Hi,
my problem occurs from the smartphone breakpoint. Above this breakpoint everything is ok, respectively i don´t need it there.

For the Smartphone view (Either landscape and portrait) i want the page to scroll. For this i want that the lower divbox is docked to the upper divbox… So that the hight of the smartphone doesn´t affect the Slider and the background picture in it. Can anyone help me with that? Thank you for an answer!

https://preview.webflow.com/preview/httpsoliver-hoffmann-biz?utm_medium=preview_link&utm_source=designer&utm_content=httpsoliver-hoffmann-biz&preview=ed3dfba5f61da0234e86d3278e34b69b&workflow=preview