You can return to your site to see the changes.
Don't forget if you don't want to display the Site Search you can disable it using the Configure Search button on the Site layout page.
Google Sites - Align Site Logo, Site Title & Site Searchposted 10 Jul 2010, 12:55 by Stephen Hind [ updated 6 Jun 2014, 09:30 by Unknown user ]
Google Sites now allows you to vertically align your site logo, site title and site search at the top, middle or bottom and horizontally in the centre. This gives you that little more control over the look and layout of your Google Site.