I am trying to replicate an effect I used on a website in days of yore. It was a simple trick, setting body padding to 15px and using a container table with a width and height of 100% and a single-pixel grey border. I am a Mac user and am forever re-sizing windows. This effect gave a fine grey line around my site, inset from the browser window edges by 15px. Change the window shape and the border stayed on all four edges until the content forced...