Ciao a tutti, per la prima volta sto costruendo un sito con i css. Ho impostato i css all'interno della pagina html, ho creato dei div#. Ho dei problemi con l'header in quanto non riesco ad attaccarla al navigation.

vi posto il codice:
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<!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>Documento senza titolo</title>
<style type="text/css">

body{ margin:0; padding:0; text-align:center; font-family:Verdana, Arial, Helvetica, sans-serif}
div#container{width:850px; margin-top:0px; margin-bottom:10px;text-align:justify;}
div#header{background-color:#FFFFFF; height:225px}
div#navigation{ background-image:url(../barra1.jpg); background-repeat:no-repeat}
div#navigation ul{margin: 0;padding: 0; list-style-type: none; text-align:right; padding:4px}
div#navigation li{display: inline; margin: 0 0 0 15px;padding: 0} /*nota display: inline*/
div#navigation a{color:#666666;font: normal bold 12px arial,sans-serif;text-decoration: none}
div#navigation a:hover{color: #666666;text-decoration: none}
div#navigation1{ height:80px;}
div#content{padding:1,5px}
div#footer{ background-color:#FFFFFF;text-align:center; padding:1,5px; font-family:Verdana, Arial, Helvetica, sans-serif}
</style>
<script src="../Scripts/AC_RunActiveContent.js" type="text/javascript"></script>
</head>
<body>
<div id="container">
<div id="navigation">
<ul>[*]Contattaci[*]Mappa del sito[*]Link[/list]
<div id="header">
<script type="text/javascript">
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','850','heigh t','225','src','header','quality','high','pluginsp age','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movi e','header' ); //end AC code
</script><noscript><object classid="clsid27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="850" height="225">
<param name="movie" value="header.swf" />
<param name="quality" value="high" />
<embed src="header.swf" quality="high" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="850" height="225"></embed>
</object></noscript>

</body>
</html>

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qualcuno sa dirmi qualcosa?