I would like to create a very simple personal webpage. I'm no designer, so I would like to use some tool (possibly a web app, possibly free) that lets you format a page using some predefined (and possibly modifiable), modern CSS templates.
I don't own a domain and I don't want to; I need my page to appear at an existing address like some.company.com/myname. I can upload content there (in fact, I already have an old-looking page there, made using the defunct Google Page Creator) but I cannot install CMSs or anything. So no Wordpress, but also no Google Sites, Weebly etc.
Do you have any recommendations?