Disable author date and category

hey guys, im really pissed off. i want to disable the author daten and category of my posts. i tried evertyhing but nothing has been changed. i can't find the codes in the stylesheet oder index.php which are important to disable. editign the custom css don't work either. the code i used in the custom css was `.entry .entry-meta { display: none; } .entry-meta { display: none; }` .. you can check my page here : www.atib-hannover.de thank you