Vollbild in Firefox

Hallo, um ehrlich zu sein ich bin noch ziemlicher Anf�nger, ich weiss, dass mein Code schlecht ist. Ich versuch lediglich eine Website zum Laufen zu bringen, die halbwegs funktioniert.

Code:

<!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>Unbenanntes Dokument</title>
<link rel="stylesheet" type="text/css" href="css/style.css" />

</head>

<body>
	<div id="fas"><img src="pictures/vorlage.jpg" /></div>
		<div id="m_header"><img src="pictures/menu_bild.jpg" />
        	<div id="menuleiste">
            	HOME
                VORTEILE
                VORSTELLUNG
                DESIGN
                KONTAKT
            </div>
        </div>
			<div id="head_picture"><img src="pictures/header.jpg" /></div>
            	<div id="vorstellung"><img src="pictures/vorstellung.jpg" />
                	<div id="ub">WIR STELLEN UNS VOR</div>
                    	<div id="text_v"><span class="blue">Ur re conesed et, iducid eaquae voluptibus sequam,<p> soles minumqui odiciae ceperis volupta 			                            turerum ratur<p> minulpa iducitatus sint omnim ilit, veliquis nullaut.</span><p></br>

<span class="black">Optatia aliquiaecae cupta si tem volo ea cones nonse dolut<p></span><span class="black"> utecatur aut omnihic aboribus etusae is di blabo.</span><p> </br>

<span class="black">Cum viducid et eum rerionsequi digenditi officient, si dolorer</span><p><span class="black"> roreribus re plis evenihic tem enis di arum iderum labores accaeru</span><p><span class="black"> ntinienem ipit event quiducium vellest eum, quiaes.</span><p></br>

<span class="black">Tis si si dolupta seque conem qui core, ut ea vollenist lam</span><p><span class="black"> quam restia si conem quat andio. Quissimeni cullit lau</span><p><span class="black">t eveni a samet lante nimoloreria sit voluptat et optatur, eate</span><p><span class="black"> laccus am imusdae suntotatur, ipsum.</span><p></br>

<span class="black">tetur sendebita conseque am hil magniet dolorem nate</span><p><span class="black"> landuscidusa que pa pere, que aut molorit, que aciis aut odi<p><span class="black"> te earum aut maionse vende corerum.</span><p></br>

<span class="blue"> CEO</span></div>
                   </div>
                   <div id="vorteile"><img src="pictures/vorteile.jpg" />
                   		<div id="ub2">VORTEILE</div>
                        <div id="text3">
                        <div id="anwender"><span class="h2">ANWENDERFREUNDLICH</span></br><p>
Endicianti si commodipis mint</br> ea ipitatusa velit, idunto quame</br> consece rspella vercimaio.</div>

<div id="bearbeitet"><span class="h2">KOMPLETT BEARBEITBAR</span></br><p>
Endicianti si commodipis mint</br> ea ipitatusa velit, idunto quame</br> consece rspella vercimaio..</div>

<div id="schnell"><span class="h2">BLITZSCHNELL</span></br><p>
Endicianti si commodipis mint</br> ea ipitatusa velit, idunto quame</br> consece rspella vercimaio.</div>

<div id="dokument"><span class="h2">DOKUMENTATION</span></br><p>
Endicianti si commodipis mint</br> ea ipitatusa velit, idunto quame</br> consece rspella vercimaio..</div>
</div>
                   
                   
                   
                   
</div>
    
</body>
</html>

Code:



@charset "utf-8";
/* CSS Document */

#div, id, body {
	margin:0px;
	padding:0px;
	font-family:Verdana, Geneva, sans-serif;
}

#menuleiste {
	position: absolute;
	font-size: 14px;
	right: 10%;
	top: 131px;
	word-spacing:40px;
	color:#7b7b7b;
	
}
#fas {
	position:absolute;
  	opacity:0.4;
	z-index:1;
	
}


#m_header {
	position: absolute;
	z-index: 3;
	width: 1367px;
	
}
#head_picture {
	position:absolute;
	z-index:2;
	top:173px;
	margin:auto;

}
#vorstellung {
	z-index: 4;
	position: absolute;
	top: 690px;
	opacity: 1.0;
	
}

#ub {
	padding-top: 30px;
	position: absolute;
	left: 10%;
	top: 7%;
	font-weight:bold;
	font-size:22px;
	color:#7b7b7b;
	
}
#ub2 {
	padding-top: 30px;
	position: absolute;
	left: 10%;
	top: 6.7%;
	font-weight:bold;
	font-size:22px;
	color:#7b7b7b;
	
}


#text_v {
	position: absolute;
	z-index: 5;
	left: 10%;
	top: 24%;
	line-height:60%;
	font-size:16px;
}

.blue {
	color:#19376e;
	font-weight:bold;
}
.black {
	color:#7b7b7b;
	font-weight:lighter;
}

#vorteile {
	position:absolute;
	z-index:6;
	top:1391px;
	opacity:1.0;
}

#text3 {
	position: absolute;
	left: 296px;
	top: 326px;
	text-align: center;
	font-size: 14px;
}

#anwender {
	position: absolute;
	left: -393px;
	top: 4px;
	width: 746px;
}

.h2 {
	color:#7b7b7b;
	font-weight:bolder;
}
#bearbeitet {
	position: absolute;
	left: -123px;
	top: 4px;
	width: 746px;
}

#schnell {
	position: absolute;
	left: 155px;
	top: 4px;
	width: 746px;
}

#dokument {
	position: absolute;
	left: 432px;
	top: 4px;
	width: 746px;
}