Why is the site not transferring correctly via ftp?

Question

FTP

Hello!
This is the first time I've encountered this...
I created a Landing Page, laid everything out according to the rules, cross-browser and without bugs, checked it on many devices and not only on my own.
Problem:
I need to transfer this page to another domain, after I copy the files to my computer through filezilla, then upload to another domain, the site looks crooked and I don’t understand why.
Has anyone experienced such things?

Answer 1

Style/script not loading. Maybe it's the filename case.

Answer 2

1. Maybe your old domain is registered in layout, styles?
2. Before that, the page was on the main page as well as on the new domain? Or was it in some folder? Maybe the paths don't match? /styles.css, ./styles.css, styles.css?
3. Maybe on the files you need to give what permissions to read? There are problems if you upload through the archive
Everything is solved through the inspector, it’s strange somehow that you were able to make up, but you can’t understand why the layout went wrong