Ciao,
bel problema, stò facendo un sito: Firefox ed Explorer me lo visualizzano in maniera diversa (entrambi creando un diverso errore).

Il sito in questione potete vederlo clickando su: www.siatec.net/andrea/megattera

Con FIREFOX il problema è che nell'header l'immagine sfumata dei pescetti presenta una sottile riga blu che si estende veso destra (sul basso)...la cosa è strana...quella riga nell'immagine NON C'è !!!

In EXPLORER 6: lascia uno spazio bianco sotto l'immagine sfumata dei pescetti...come mai?

Perchè da questi problemi? da che può dipende?

Il codice XHTML è:

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Layout 38</title>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<meta name="generator" content="HAPedit 3.1">
<link href="layout.css" rel="stylesheet" type="text/css" title="default" />
</head>
<body>
<div id="container">
   
   <div id="header">
     <div id="logo" class="head"></div>
     <div id="foto" class="head"></div>   
   
   </div>
   <div id="menu">
   <ul id="nav">
       <li id="active"><span>Home</span>[*]<span>About me</span>[*]<span>Servizzi</span>[*]<span>Portfolio</span>[*]<span>Contact</span>[*]<span>Links</span>[/list]</div>
   
   <div id="wrapper">
      <div id="content">
         

1) Content here. column long long column very long fill fill fill long text            text column text silly very make long very fill silly make make long make text fill very            long text column silly silly very column long very column filler fill long make filler long            silly very long silly silly silly long filler make column filler make silly long long fill            very.</p>
         

very make make fill silly long long filler column long make silly silly column filler fill            fill very filler text fill filler column make fill make text very make make very fill fill            long make very filler column very long very filler silly very make filler silly make make            column column </p>
         

fill long make long text very make long fill column make text very silly column filler silly            text fill text filler filler filler make make make make text filler fill column filler make            silly make text text fill make very filler column very </p>
         

column text long column make silly long text filler silly very very very long filler fill            very fill silly very make make filler text filler text make silly text text long fill fill            make text fill long text very silly long long filler filler fill silly long make column make            silly long column long make very </p>
       </div>
    </div>

    <div id="navigation">
        


          <ul id="nav2">
			[*]Home
			[*]About me
			[*]Servizzi
			[*]Portfolio
			[*]Contact
			[*]Links	
		[/list]
        </p>
    </div>

    <div id="extra">
        

3) More stuff here. very text make long column make filler fill make column        column silly filler text silly column fill silly fill column text filler make text silly filler        make filler very silly make text very very text make long filler very make column make silly        column fill silly column long make silly filler column filler silly long long column fill silly        column very </p>
   </div>
   
   <div id="footer">

Here it goes the footer</p></div>

</div>
</body>
</html>
il codice CSS è:

codice:
body{
    margin:0;
	padding:0
    margin-bottom: 0.95em;
	font-family: arial, helvetica, verdana, tahoma, sans-serif;
	font-size: 80%;
	color: #000;
	background-color: #fff;
	line-height: 180%;
}

p{
    margin-top: 0px; 
	margin-right: 10px; 
	margin-bottom: 10px;
	margin-left: 10px;
}


a{  
   display:block;
   color: #981793;
   padding: 10px;
}

div#container{
   width: 760px;
   margin:0 auto;
   border: 1px solid #D7D7D7;
   }

div#header{
   margin: 0 auto;
   width: 760px;
   height: 160px;
   border: 1px solid #D7D7D7;
   color: #000;
}

div#logo{
   height: 160px;
   width: 472px;
   margin-top: 10px;
   background-image: url("img/megattera.jpg");
   background-repeat: no-repeat;
   background-position: top left;

}

div#foto{
   float: right;
   height: 160px;
   width: 288px;
   background-image: url("img/castagnole.jpg");
   background-repeat: no-repeat;
}

div#header h1{
   margin: 0;
   font: normal 280% Georgia, "Times New Roman", Times, serif;
   color: #79B30B;

}

ul#nav{
   float: left;
   width: 100%;
   list-style: none;
   margin: 0;
   padding: 0;
   border-bottom: 1px solid #D7D7D7;
}

ul#nav li{
   float: left;
   margin: 0 0.2em 0;
   padding: 0;
}

ul#nav a{
   float: left;
   padding: 0 0 0 0.4em;
   background: url("img/tab.png") no-repeat top left;
   text-decoration: none;
   color: #222;
}

ul#nav span{
   float: left;
   padding: 0.4em 0.4em 0.4em 0;
   background: url("img/tab.png") no-repeat top right;
   cursor: pointer;
}

ul#nav li#active a,ul#nav a:hover{
   background: url("img/tab2.png") no-repeat top left;
}

ul#nav li#active span,ul#nav a:hover span{
    background: url("img/tab2.png") no-repeat top right;
	color: #184D8A;
}
	
	

div#content p{line-height:1.4}
div#navigation{background:#ffffff}

ul#nav2{
	list-style: none;
	margin: 0;
	padding: 0;
	}
	
/* =-=-=-=-=-=-=-[Navigation Three]-=-=-=-=-=-=-=- */
	
#navigation {
	width: 200px;
	border: 1px solid #ccc;
	margin-top: 10px;
	}

#navigation li a {
  	height: 32px;
  	voice-family: "\"}\""; 
  	voice-family: inherit;
  	height: 24px;
	text-decoration: none;
	}	
	
#navigation li a:link, #menu3 li a:visited {
	color: #888;
	display: block;
	background: url(img/menu3.gif);
	padding: 8px 0 0 30px;
	}
	
#navigation li a:hover, #menu3 li a:active {
	color: #283A50;
	background: url(img/menu3.gif) 0 -32px;
	padding: 8px 0 0 30px;
	}


div#extra{background:#FF8539}
div#footer{background: #333;color: #FFF}
div#footer p{margin:0;padding:5px 10px}


div#content{float:right;width:500px}
div#navigation{float:left;width:200px}
div#extra{clear:both;width:100%}
Grazie
Andrea