Hi, Hope you are having a great day. Generally you need to create announcement bar inside shopify which will stay at the top of your pages. But if you don't want to use that and use one with replo, you can simply hide announcement bar for your page from replo page setting - https://support.replo.app/articles/1993053339-page-settings#hide-announcement-bar-18 - and the create a look a like area inside the page directly.
Do let me know if I am missing anything here.