Custom CSS to Hide Post Title not working

Whoops - wrong thread - sorry! should be in Catch Box Pro, feel free to move if you can. Hello! I used the following code previously to hide the titles of posts...but after the new wordpress upgrade I just created a new post and it still shows the title....but all older posts do not. Stange! Do not know if related to WP update or not. The code is: /*Hide Page Title*/ .page .entry-header { display: none; } Page it doesnt work on is: http://idigitalmedium.com/smitnev1/ Thanks! Keith