Hebrews12

Thank you for taking the time to respond. As I understand it, I have a wrapper ("topheader") which is 960px wide and then 3 columns within that which each amount to less than that width. But when I try and add something below that in the code, it moves my end column on to the next row.

Hi everyone. I'm new to this CSS lark and am really struggling to get the layout that I'm after. I'm after a layout like the one attached and have got to this stage - http://www.enrichproject.org.uk/page1.html - but whenever I try to add the rows beneath, it puts everything else out. I'm not sure if I've just done it completely wrong. Can anyone advise me keeping in mind that I'm a novice? Thanks for looking.