Instructions

Clearing

Footer

Adding a footer following the columns, yet still inside the .container, will cause this overflow:hidden clearing method to fail. You can place a .footer into a second .container outside the first one with no detrimental effects. The simplest choice may be to start with a layout containing headers and footers and remove the header to utilize the clearing methods in that layout type.

Backgrounds

By nature, the background color on any div will only show for the length of the content. This means if you're using a background color or border to create the look of a side column, it won't extend all the way to the footer but will stop when the content ends. If the .content div will always contain more content, you can place a border on the .content div to divide it from the column.