HtmlSave.com is an absolutely helpful website for paste hosting HTML, CSS, JS files online. The service is so simple to use for beginners.
PASTE-HOST method in HtmlSave is a good method for beginners who don't have knowledge in using Gits, FTP, etc.
Unlike file-upload hosting service, you don't need to zip all the files to start hosting. You can directly write or copy-paste your code on HtmlSave and save it online.
Since HtmlSave is for mockups, paste host helps you in saving your time.