CSS to hide tag title AND display its description

Hi! website is vestron(dot)wetta-sunnydide(dot)fr using Rock Star Pro. I've set up tags and tags description for posts. On the page showing results when clickin on a tag to show all the related posts, I'd like to hide : Tag: "tag title" while still displaying the tag description. I've used the following custom CSS in the theme: .tag .page-header { display: none; } but as you can guess, it removes tag name AND the description. Could you help?