Need help with editing pre-load page

Hello everyone,

I hope you are doing well.

I need help with the pre-load animation, on how to edit it, I’m not finding where I can edit it.

Read-only link :

Another thing that I need your help with is, how I can add one space in the “About us” page, of the Frequently Asked Questions to make a separation between those sections.

Please if anyone can help me with this I will be grateful.

Thanks a lot.