Wordpress Template Changing

Basically if you go to our website www.slscomputing.co.uk. Go to services page you will see a portfolio page. If you click on one of those it will go to a post stlye page. I do not want this to happen, i want it to go to a fullwidth page which is basically a blank page. Also if you go to homepage half way down you will see Our Services widget. They all link to different pages. What i want is so that the Our services on the homepage sync with the services page on menu in a portfolio format and when you click on either a page from the services menu in the portfolio style view or a link from our services widget to go to a blank page (fullwidth) instead of post style. Please email any problems