CSS Question for Link colour

As per another thread I changed my custom css to the following so my text links would be highlighted in a colour.

p a:link { color: #004878; text-decoration: none }
p a:visited { color: #389AC7; text-decoration: none }
p a:hover { color: #B52268; text-decoration: none }
p a:active { color: #0000ff; text-decoration: none }

Unfortunately, this also changes the button text on the same page. Steve? Help? 8 )