Lock Section in Position during scroll

Hi, I am trying to learn webflow using this template. When viewed on a “mobile screen”, there is a vast empty space below as soon as the page loads. It seems like an incomplete page at first.

Is it possible to hold the position of the form and the section below till the above animation is 100%?

Webflow template: Pitch Webflow Rebuild - Webflow

Image 1: Current state of the template with empty space
Image 2: View when reducing the margin
Image 3: View after scrolling with a reduced margin.

Here is my public share link: LINK
(how to access public share link)