Most people don't know that you can look up past "snapshots" of almost any website. Archive.org is a 501(c)(3) nonprofit organization that was formed to build an expansive Internet library.
Linking a CSS file to an HTML file allows you update the styling of the HTML document by editing the CSS file.
If you're the administrator of a Facebook Page for your business (or whatever), you can still comment as yourself.
Using CSS, you can display beautiful background images that span the entirety of the user's window -- regardless of their resolution. Here's how to do it.
This guide will show you how to properly commit and push your work in Git. It is assumed that you have Git installed and that you're currently in a clean master branch.
Finding guides