When I click on a hyperlink on a page, that page stays open after going to the hyperlinked page.

If I navigate through the site using hyperlinks, every page stays open.

In other words, if I go to 5 different pages then there are 5 open pages.

This means that when I want to leave the site, I have to close all of those pages individually.

How do I have a page close after I hyperlink to another page?

don't use target="_blank" on your links

_blank means open new windpw
_self means same page to open but its same as without '_self'