“No Post Found” Page

Ok, so I positioned some items on my sidebar absolute, which before hand they were not supposed to show up on the “No Post Found” Page. Now though they are.

My question is how can I give the “No Post Found”, and just that page, a set length so I can fit my entire side bar on it. Either that or make it so JUST on the “No Post Found” Page it doesn’t show SOME items on my sidebar.

Can anyone help?