CSS for tablet view (squarespace 7.1) spacing issues

I am looking for a very quick job / turnaround - I have designed a 4 page website on Squarespace and need help with the tablet view optimisation (spacing issues). To match desktop / mobile spacing. I have provided a video from my client showing where the issues are on each page so it's quick / easy to target with code. I can't view tablet annoyingly. Should take 30 minutes if you know what you're doing. I have written all mobile optimisation code.

https://goldfish-tangerine-bafk.squarespace.com/
password = ian

Home page - spacing between heading and body text + spacing between imagery and footer.
Consulting Services - neaten spacing issues (to match desktop)
Sectors - portfolio page - add hover overlay for titles (as per desktop and mobile CSS is already written for this)
About - any spacing issues to match desktop view

Finally, I have written code (for mobile view) to display the home page video in vertical format (I will share this with you) but it need tweaking very slightly as fallback image displays and takes awhile to load.

Needs to be done today / this eve if poss!

Thanks!