Nice Contact or landing page without changing entire theme for website

Hi,
We are getting people to our website and lots of traffic, but they are not filling out the contact form as much as they should be. So we tried to create a landing page as a test http://nomorecreditcards.com/about-us/debt-settlement-free-quote/

This helped a little, but we would like to make more landing pages connected to other pages. We would also like the landing page to look different from the other pages as far as the theme.

Is there a good plug in for this, or can we use a different theme on just 1 new page of the website, without changing our entire website theme?

Please help us on this subject so that we can have a nice clean landing page or pages that look different from the rest of the site, helping to capture more leads.

Also if you put your courser over the page on our website that says about us, then try to click on the debt settlement quote page, it doesn’t always allow you to click on it. Sometimes users will have to go on the bottom or right of the page in order to reach that page. The top menu button doesn’t seem to work right.