ciao,

infatti avevo trovato quiesta informazione ma non capisco cosa sbaglio.

questo è il css:
/*generali*/

body {
color: #000000;
background-color: #FFFFFF;
margin: 0 auto;
font-family : Verdana, Geneva, Arial, Helvetica, sans-serif;
font-size : small;
text-decoration: none;
height:500px;
}

/*testa*/

div.testa
{
height:150px;
width: auto;
background-color: #E9BF4F;
position : static;
text-decoration: none;
margin: 0 auto;
text-align: center;
}

div.testacorpo
{
top:0px;
height:150px;
width: 770px;
text-align: left;
text-decoration: none;
display: block;
}

div.testacontenuto
{
top:0px;
height:150px;
position : absolute;
text-decoration: none;
display: block;
}

div.testalogo {
height:150px;
top:15px;
width: 310px;
position : absolute;
text-decoration: none;
display: block;
}
div.testaimg
{
height:150px;
top:0px;
width: 450px;
margin-left: 320px;
position : absolute;
text-decoration: none;
display: block;
}

************************************************** ******************
questo è html:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xml:lang="it" lang="it" xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1" />
<title> </title>
<style media="screen" type="text/css">
@import url(prova.css);
</style>
<meta name="author" content="" />
<meta name="generator" content="" />
<meta name="description" content="" />
<meta name="keywords" content="" />
<meta name="rating" content="general" />
<meta name="robots" content="index,all" />
<meta name="revisit-after" content="7 days" />

</head>

<body>


<div class="testa">
<div class="testacorpo">
<div class="testacontenuto">
<div class="testalogo">immagine logo</div>
<div class="testaimg">immagine </div>
</div>
</div>
</div>
</body>
</html>

grazie

Emanuela