Get ready for your streamlined Page
Starting on 23 August, we'll be simplifying your Page to make it easier to
browse: 1) Boxes are going away, including the Boxes tab; and 2) All custom
tabs will be narrowed to 520 pixels. If you have a custom tab, we recommend that
you visit your tab now for a preview of how your content fits in the new
layout ? please make adjustments as needed. The rest of Facebook will see
the old tab width until 23 August.