Help With 7.0 CSS Mods To Allow 7.1 Update

I'm looking to update home page custom button & layout on two websites that use the same CSS so that I can upgrade Burke templates to 7.1 Squarespace. The CSS code that needs tweaking relates mainly to button & page style/layout but I would also like someone to look over other design elements to make sure that the transition from 7.0 to 7.1 looks identical. I have looked at carrying out the changes myself but out of my league so need to hire someone to help. Thanks,

Can you send site url + CSS code?

The first site is at https://www.hicat.co.uk

CSS below code https://www.hicat.co.uk/css-09-2023

The other site is private so can't share URL on forum but it uses the same home page CSS with additional button customisation e.g.

.sqs-block-button-element--large {background-color:transparent!important; background-image:     url('https://static1.squarespace.com/static/5af3054b7c9327c667fc4e4f/t/653f614abc12ea3fd220b944/1698652490836/LKCH+LOGO+NAV+4.png'); background-size: 100%!important; background-repeat:no-repeat!important;

Thanks for your help.

These class names/ids doesn't exist in 7.1 so you will need to update

SS 7.1 doesn't have Index page so these class name won't work