Google Sites allows you to easily change the layout of the entire site. This can be anything from headers and footers, sidebars and navigation, or changing the width of the site. To do this, make sure you are out of 'edit mode' then click onto More at the top right of a page (or M on your keyboard) then click Edit Site Layout (or Shift + L on your keyboard). Use the guide below to become familiar with changing your site layout.
Editing the Sidebar or Navigation Bar