How can I adjust line spacing and text size in a custom section on mobile?

[Rupert22]

Hi, recently i created custom made section "backround-video" and the spacing between lines when i open it on mobile is too small and size of words is too big. Where can i customize spacing between lines and size of words? 

[Rupert22]

Website: nexaco.co

Password: 123456

[Tejas_Nadpara]

@Rupert22  Could you share your site URL? so I can assist you better.

[Rupert22]

oops, i thought i mentioned it here.

https://nexaco.co/password

password: 123456

[Tejas_Nadpara]

@Rupert22  I can't able to see any video same as your screenshot. Are you working on live theme?

[Rupert22]

Yes, no help needed right now, thanks a lot!