formstack - multi page ecommerce form

Hello, I own a website called [login to view URL] which provides legal advice in the UK. At the bottom of each page we currently have a web form from a 3rd party. I want to build my own multi-page form using formstack to include 4 pages... 1. Page 1 is the existing 'ask a lawyer question box' as it appears on the website 2. Page 2 is a page with information about the lawyer and reassurance on quality etc (I'll provide content ad image; 3. Page 3 is the ecommerce in a format that is simple (i'll provide basic example) 4. Finally - a thank you and what happens next... you will be contacted by email, phone etc. The design can be plain but needs to blend in with current minimal design, white back ground and orange/yellow buttons etc.