Hi

I build a site using HTML and CSS.
I made so that the links are in purple, rather than the default blue.
But for some reason, sometimes the colour of my links is differet: it either shows up as blue or as black.

Can anyone help me with this?
MORE DETAILS:
In Firefox, even though it usually shows my links in the set colour, sometimes they're black.

In Safari or Opera (don't remember which one) links become blue instead of set colour.

The colour I set for my links is a web browser-safe one (#6633CC)
I don't mean they change colour when they are visited. I set CSS up (using the method you describe here) so that in all four cases, links are purple.