Just want to know is it possible to embed a HTTP web site into SharePoint Online. I know there are provisions to embed HTTPS web sites. I am not interested in HTTPS web sites.
This article should explain the why - https://blogs.technet.microsoft.com/joeric/2018/05/18/sharepoint-and-iframes-this-content-cannot-be-...
I don't think embedding an http page in SharePoint Online is possible with an out of the box site.