Salve a tutti sono nuovo come utente ma seguo questo sito da parecchio tempo e parecchie volte mi siete venuti in soccorso con le vostre guide!
Ho un problema, vi metterete a ridere sn sicuro, ma io sto impazzendo, ho scritto una pagina in html e vedo uno spazio bianco tra 2 immagini che sono una sotto l'altra, uso firefox 3.0.7! LE HO PROVATE TUTTE! i tag img sono attaccati, bordere e vspace nn posso usarli perchè deve essere scritta in html 1.1, ho guardato le vostre guide ma nn ho trovato nessuna soluzione, vi posto il codice della pagina e il css!

anche per lo sfondo dei menu impostato tramite css mi succede.

codice:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Home Page HCI-LAB</title>

<link rel="stylesheet" type="text/css" href="css/master.css" />
</head>

<body>

<div class="contenitore">
[img]images/logo.gif[/img][img]images/logo-secondo.gif[/img]

  <div class="grid_1">
    
    <ul id="menu_sx">
		[*]Home[*]Publications[*]Projects[*]Download &amp; videos[*]Services[/list]
    
    

    <h3>Last News</h3>
		<h4 id="news_title">April 15, 2007</h4>
		<p id="news">HCI Lab faculty edit special issue on "Web 3D Technologies for Learning, Education and Training". Luca Chittaro and Roberto Ranon are guest editors of the special issue of the Computers &amp; Education journal on the different aspects of using Web 3D Technologies for building learning, educational and training applications. [Read the introduction]</p>
		

More News..</p>
	
   

	


    <a href="http://validator.w3.org/check?uri=referer">
    </a>
    </p>
    




    <a href="http://jigsaw.w3.org/css-validator/">
        
    </a>
</p>
 
  </div>
 
  <div class="grid_1_2">
    <ul id="menu_dx">
		    [*]More News..
			[*]Sponsors
		[*]Members
		[*]Courses
		[*]Contact US[/list]
    

    [img]images/uni1.jpg[/img]
    [img]images/uni2.jpg[/img]
    [img]images/lab1.jpg[/img]
    [img]images/lab2.jpg[/img]
    
 </div>
  <div id="contenuto">
<h3>About Us</h3>




	

In 1998, prof. Luca Chittaro founded the Human-Computer Interaction Laboratory (HCI Lab) at the Department of Math and Computer Science of the University of Udine. The HCI Lab focuses on new interaction paradigms to be used with emerging Technologies, such as Mobile Devices and Services, Web3D, Virtual Reality, and Computer-supported Cooperative Work. Besides doing research, the Lab develops applications in domains such as Aerospace, Medicine, Tourism, Training, and the Web. The HCI Lab is often featured on TV and press reports.</p>
	

	



    On the right:  In order: two views of the Math and Computer Science Department of the University of Udine, people working at the Lab.
    

    Below:University of Udine
    </p>
    

[img]images/uniud.jpg[/img]
  </div>
  
	<div id="footer">
    

Last update: 7 February 2009
    HCI Lab web site created by Bortot - Zorat - Udine</p>
    
    </div>

</div>
</body>
</html>
codice:
@media screen {

/*PARTI COMUNI*/

body {
		text-align: center;
		font-size: 62.5%;
		padding: 0 0 20px 0;
		margin: 0;
		font-family: Verdana, Helvetica, sans-serif;
		color: #000000;
		background: url(../images/sf2.gif) repeat center;
	 }

 a { 
	text-decoration: none;
	text-transform:capitalize;
	color:#F00;
   }
   
a:hover  { text-decoration:underline;
		   color: #F96;
	       text-transform:uppercase;
		 }

.contenitore { 
				width: 720px;
				margin: 0 auto;
				padding: 0px;
				text-align: center;
				background-image: url(../images/sfc.gif)
			 }
			 

#contenuto {
			 width:450px;
			 float:left;
			 padding: 15px;
			 text-align:center;
		   }
		   
#contenuto h3, #contenuto h4, #contenuto li, #contenuto strong { color: #333; }

#contenuto h3 {
				margin-bottom: 15px;
				font-size: 3em;
				text-transform: uppercase;
			  }
			  


#footer {
			position: relative;
			clear: both;
			padding: 10px 0;
			font-size: 1.1em;
			border: red solid;
		}



/*MENU LATERALI*/

.grid_1 {	
			width:120px;
			text-align:left;
			float:left;
		}
		

.grid_1_2 {
			width:120px;
			float:right;
			text-align:left;
	   	  }
	   	
	   	  
.grid_1_2 img {
				margin-left:22px;
			  }
		  
#menu_sx, #menu_dx{
				    list-style-type: none;
				    background-image:url(../images/sfondo2.jpg)
				  }
				   


#menu_sx a, #menu_dx a{
				   		font-family:Verdana, Geneva, sans-serif;
				 	 	font-size:1.1em;
				   		line-height: 1.5em;
				 		text-decoration:none;
				 	  }
				 
#menu_sx a:hover, #menu_dx a:hover { text-decoration:underline; }