Help with making website responsive

Hey there,

i have a problem with my webpage. I try to optimize it for mobile version and for any mobile device widht.

My problem is that i have several divs, elements and headings which overflow / overlap to the right side of the screen when the screen width is smaller than 479 px. (for example in section-home-header or section-home-testimonials)

How can i change this or optimize the regarded divs, elements etc. so that the page is perfectly responsive on every mobile screen width?

Here is my site Read-Only: LINK Webflow - immofilms