Css won’t load in firefox

Hey,

I have downloaded a theme but the css wont load in firefox, You can see the site working on http://www.dutchscene.nl in IE but does anybody know why it wont show the layout in firefox?

Code:

in header.php

<style type="text/css" media="screen">
@import url( <?php bloginfo('stylesheet_url'); ?> );
</style>

the css:

/*
Theme Name: Landzilla-From the Swamp
Theme URI: http://www.miklb.com/blog
Description: Landzilla-From the Swamp is a update of the original Made by Vladimir Simovic aka Perun (private Weblog: <a href="http://www.perun.net">www.perun.net</a>).
Version: .4
Author: Michael Bishop
Author URI: http://www.miklb.com

The CSS, XHTML and design is released under GPL:
http://www.opensource.org/licenses/gpl-license.php
*/

/*--------------Main Divs---------------*/
body {
	padding: 0;
	margin: 0;
	font: 10px verdana, sans-serif;
	background: #394948 url(images/top.jpg) repeat-x;
	color: #333;
	line-height: 1.4em;
}

#page {
	text-align: left;
	margin: 0 auto;
	width: 770px;
	padding: 0 0 5px 0;
	position: relative;
	background: url(images/background.jpg) repeat-y;
	border-bottom: 1px solid #ddd;
}

#header {
	background: url(images/header.jpg) no-repeat;
	height: 190px;
}

#wrapper {
	width: 770px;
	background: #FFF;
	overflow: hidden;
}

#content {
	width: 520px;
	float: left;
	margin-left: 15px;
	background: #FFF;
	font-size: 1.1em;
}

#sidebar {
	float: right;
	width: 200px;
	text-align: center;
	background: #D3D5D5;
	font-size: 1.1em;
	padding: 0 0 5px 0;
	margin: 0 15px 15px 0;
}

#footer {
	clear: both;
	margin: 5px 15px 0 15px;
	padding: 5px;
	text-align: center;
	font-size: .9em;
	background: #FFF;
	border-top: 1px dotted #394948;
}

hr {
	display: none;
}

img {
	border: none;
}

acronym, abbr, dfn {
	border-bottom: 1px dashed #333;
	font-style: normal;
}

blockquote {
	border-left: 5px solid #394948;
	margin: 1em 0;
	padding: 5px 10px;
	background: #00bff3;
	width: 490px;
}

code, pre {
	color: #F26722;
	font: 1.1em 'courier new', courier, monospace;
}

.alignleft {
	float: left;
	margin: 0 15px 3px 0;
}

.alignright {
	float: right;
	margin: 0 0 3px 15px;
}

.center {
	text-align: center;
}

#header h1 {
	font: 30px 'trebuchet ms', sans-serif;
	color: #394948;
	margin: 0;
	padding: 5px 15px;
}

#header h1 a {
	color: #394948;
	text-decoration: none;
}

/*-----------------Post--------------*/

#content h2 {
	color: #394948;
	border-bottom: 1px solid #D3D5D5;
	font: bold 1.3em verdana, sans-serif;
	text-align: center;
	margin: .5em 0 0 0;
	padding: 2px 5px;
}

#content h2 a {
	text-decoration: none;
}

#content h3 {
	padding: 2px 0 2px 17px;
	margin: .5em 0;
	font-size: 1.4em;
	background: url(images/document.gif) no-repeat left center;
}

#content h3 a {
	color: #394948;
	text-decoration: none;
}

#content h3 a:hover {
	color: #394948;
	text-decoration: none;
}

#content h4 {
	font-size: 1.3em;
	padding: 0;
	margin: 1em 0;
	color: #444;
}

#content h5 {
	font-size: 1.1em;
	padding: 0;
	margin: 1em 0;
	color: #444;
}

#content a, #footer a {
	color: #394948;
}

#content a:hover, #footer a:hover {
	color: #444;
	text-decoration: none;
}

#content .meta {
	font-size: .9em;
	background: #00bff3;
	margin: 0;
	padding: 1px 5px;
}

#content .feedback {
	margin: 1em 1.7em 1em 1em;
	text-align: right;
}

.storycontent {
	margin-bottom: 60px;
	padding-bottom: 90px;
	background: url(images/divider.png) no-repeat bottom center;
}

.navigation {
	margin-bottom: 45px;
}

.edit {
	background: url(images/pen.png) no-repeat center right;
	padding-right: 14px;
}

/*----------------Sidebar---------------*/

#sidebar ul, #sidebar ol, #sidebar p, #sidebar form, #sidebar dl {
	text-align: left;
	padding-left: 10px;
	padding-right: 10px;
}

#sidebar div {
	margin: 10px 10px 15px 10px;
	text-align: left;
}

#sidebar h2 {
	font: bold 1.2em verdana, sans-serif;
	color: #fff;
	margin: 0 0 .5em 0;
	padding: 1px 5px 1px 20px;
	background: #00bff3 url(images/cube.gif) no-repeat center left;
	text-align: left;
}

#sidebar a {
	font-weight: bold;
	color: #394948;
	text-decoration: none;
}

#sidebar a:hover {
	color: #D3D5D5;
	background: #394948;
}

#sidebar ul {
	list-style: none;
	margin: .5em 0 1em 0;
}

#sidebar ul ul {
	margin: 2px 0 2px 7px;
	padding: 0;
}

#sidebar .sidebar-search {
	margin-bottom: 3px;
	width: 150px;
	font-size: 1em;
}

.current_page_item {
	font-size: 1.4em;
	color: #F26722;
}

.rss {
	background: url(images/feed-icon-10x10.gif) no-repeat center left;
	padding-left: 12px;
}

/*---------------Comments----------------*/

#commentlist li {
	margin-bottom: 1.5em;
	padding-bottom: 1em;
	border-bottom: 1px solid #D3D5D5;
}

#commentform {
	margin: 1em 0;
	padding: 1em;
	border: 1px solid #394948;
	background: #D3D5D5;
}

can someone help me out please?

Thanks,
Stan