You can see my page here: http://e7p.it/test-tabs.php My problem is that as you can see tabs (tab1 tab2 tab3) have a large margin between each other, but i've set it to 0. The ul margin in general is set to some value, but then the specific class margin (i.e. ul.myclass) has 0 margin. Is it possible this second margin does not overwrite the other? thanks