Admin Forum:How do you make a Portal page look like the main page (no sidebar)?

Hello. I'm an admin at w:c:bakerstreet which is for everything to do with Sherlock Holmes, and I was thinking of making portal pages for the different adaptations to make navigation easier for people. So what I would like is to have a version of the main page for Sherlock, one for Elementary, one for the Guy Ritchie films etc

I've seen on the w:c:fallout wiki that they seem to have this, and that the portal pages look just like the main page - with no sidebar. How would I do this? -- bloob ( talk ) 13:57, February 18, 2013 (UTC)
 * This is generally not allowed to do, see TOU on foot.--PedroM 14:53, February 18, 2013 (UTC)