Cahnges to Virtue Theme

Hi,
I have few clarifications regarding the free Virtue theme i am currently using:
1. Can I make the Header full width in this theme, like Pinnacle(i used Pinnacle for other website-Fan of Kadence themes). I am using an Autoplay & looped video feature currently to make it more appealing i need full width. if yes, what CSS should be used for the same?
2. How can I reduce the gap between the Logo & header?
3. Is it possible to add text(Title) on the header video & lastly
4. How can i make my Menu & Logo sticky so the even when a visitor scrolls he should see the Menu.

thanks in advance.

Syed