you have DOCTYPE declaration twice in header.php
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>BCS Itera</title>
<link href="bcs/theme/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<p>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="ee-EE">
<head profile="http://gmpg.org/xfn/11">
<meta http-eq...
clean that up - delete the duplicate code.
this and other things contribute to the amount of validation errors your site has: http://validator.w3.org/check?uri=http%3A%2F%2Falturl.com%2Ftvrc&charset=%28detect+automatically%29&doctype=Inline&group=0
start by fixing these errors, and see if the display improves.