a:active not working, but a:hover is

Maybe it is just late, but I can’t figure out why my a:active CSS is not working in the main menu. The a:hover is working and changing font color to white. But the a:active isn’t.

Here’s the CSS:

div#header2_left a:hover, div#header2_left a:active {
color: #FFF;
}

Here’s a page where it is not working.

https://www.webbizgeek.com/about-webbizgeek/

If you mouseover, you get white, but it should be white as well while you are sitting on the page, no?

What am I doing wrong? Any assistance would be appreciated.

Thank you.