I recently volunteered to be webmaster for a nonprofit club I'm part of. While I know some very basic HTML, I wanted a more attractive website than one I could hard-code. I found a website that allows drag and drop arrangement of objects and then lets you either publish the site for free (with a banner advertising an upgrade) or buy domain and hosting services from them.
I published the site for free, then copy-pasted the source code, removed the banner, and would like to buy my own domain name and hosting for the site.
Can I get in trouble for this? No part of the source code said it was copyrighted by the website, and parts of it have been and will be further changed by me.