Greeting to all.

I'm working my way through Mr. LLoyd's book and I've tried several learning tools and I've gotten further in two days with his that I EVER did with any other, so kudo's to Mr. Lloyd!

I'm on page 103 or so and am building the diving website.

I'm adding the link state psuedo-classes as such:

a {

font-weight: bold;

a:link {
color: black;

a:visited {
color: gray;

a:hover {
text-decoration: none; color: white; background-color: navy;

a:active {
color: aqua; background-color: navy;

I'm using Firefox 12.0 on Vista Home Premium. All of the link states are working fine except for the a:visited {
color: gray;

Any help would be greatly appreciated,