How do I code a layout in a box?
So my idea is to have my "app" running in a rounded rectangle that sits on a background image. I want it to expand so it's say 20px from all 4 edges of the window but the content of the "app" inside may need to scroll vertically. I'm designing for an iPad but it needs to work in modern browsers at higher resolutions too.
What's the best way to do this?