Text and Header Horizontal Scroll section div issues

Hi all,

I am very new to webflow and trying to work out something that is probably really simple, but is driving me insane. I want to have a horizontal scrolling section that has a header and text. I have created a working scrolling section, but cannot work out how to have it so my header and text sit in the middle of the device screen, any idea? Also, as you will see, for some reason the first section has a white margin at the top that I can get rid of.

Here is my read-only site

And thank you in advance for any help