You are amazing. Thank you

Greetings, I do not understand why I have this border in between any 2 sections which I add in my site.Website is arcanainn.ro and password is izzetinnTheme is dawn.

Greetings,  This does not help in my case.I am using SenseWebsite is arcanainn.roPassword is izzetinn

Greetings,  I would like to add a border on the entire website with a certain PNG saved in my files.How can I achieve this? Appreciate your answers