Entire store is broken

My shopify store is rendering as broken after Ai tried to assist with some minor changes to the css. If someone could please assist that would be great.

my store url is 8715fd-2.myshopify.com

Hi @Andalbutka23 for theme repair services you can reach out to me.

You should have a proper process in place to backup themes before messing around with the very thing your storefront is.
If not nows the time to go and learn and put one in place.

As these are the peer to peer forums, if you can’t hire expertise then to DIY either:

reach out to shopify support advisor directly:
https://help.shopify.com

Or try file rollbacks
https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/edit-theme-code#roll-back

Hi @PaulNewton Many thanks for your kind support. Fortunately it is back to normal now - it must have been one of those temporary issues with the platform and not the browser as I troubleshooted that from the outset. Will certainly save duplicates for testing customisations as you suggested