I notice that the "E" and the horse's ears are touching the box - some margin on #logoWrapper would help that.
Here is your main problem:
Code:
http://www.equinartsinstitute.com/cart/includes/templates/classic/css/stylesheetOLD.css
/**
* Main CSS Stylesheet
*
* @package templateSystem
* @copyright Copyright 2003-2006 Zen Cart Development Team
* @copyright Portions Copyright 2003 osCommerce
* @license http://www.zen-cart.com/license/2_0.txt GNU Public License V2.0
* @version $Id: stylesheet.css 5349 2006-12-22 20:34:40Z birdbrain $
*/
body {
margin: 0;
font-family: verdana, arial, helvetica, sans-serif;
font-size: 62.5%;
color: #000000;
background-color: #e5edf5;
}
stylesheetOLD.css is still being applied, and since it comes after stylesheet.css, it is overriding everything you do there.
You need to delete or move stylesheetOLD.css.
...nevermind, afo beat me to it :)