Check boxes are shown as ☐ when unchecked, or ☑ or ☒ (depending on the GUI) when checked. A caption describing the meaning of the checkbox is normally shown ...

Showing and Hiding

Cutting to the chase and keeping it simple for the time being, we’re going to have our page start out with a visible content area and hidden navigation. So we can start with this CSS:

#main_nav { display: none; }

In all likelihood you…