ayiuda

estoy tratando de hacer una pagina web y siguiendo a la vez su tutorial, por cierto muy bueno ; y he conseguido que se vea bien en internet explorer pero en firefox no se ve bienustedes me podrian hacer el favor de revisarel codigo y decirme que he hecho mal.
De antemaño muchisimas gracias.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<head>
<title>It’s Your Solution Group, Inc</title>
<link rel="stylesheet" href="estilo-general.css" type="text/css" media="all" />
</head>

<body>

<div id="cabecera"><h1>It’s Your Solution Group, Inc</h1></div>
<div id="navegacion"><img alt="image001 (118K)it's your solution" src="objetos/image001.gif" height="398px" width="709px" /></div>
<div id="contenido">
<div id="menu">
<ul><li><a href="#">About us</a></li><li><a href="#">Services</a></li><li><a href="#">Parenting Course</a></li><li><a href="#">Continuing Mediator Education (CME)</a></li>
<li><a href="#">Our Expertise;</a></li><li><a href="#">Registration Form </a></li><li><a href="#">Contact us</a></li><li><a href="#">Our Sponsors</a></li>
</ul>
</div>
<br /> &nbsp;
<br /> &nbsp;
<h2>About Us</h2>
<br />
<br />
<br />
<p>Ours is an established Conflict Resolutions Company close to you. Our head office is located in Downtown Orlando. We are experts in many kinds of conflict resolution services, including the Parent and Family Stabilization Course for Divorcing Parents, County and Family Mediation, with a focus on cultural diversity.</p>
<br />
<br />
<p>We also would like to offer our Continuing Education courses for mediators; we have been offering services to the community, with special attention to immigrants experiencing conflicts, mainly due to the process of acculturation.</p>
<br /> &nbsp;
<br /> &nbsp;
<p><h3>Ailyn Gonzalez.</h3></p>
<br /> &nbsp;
<p>It's Your Solutions Group, President</p>
<br /> &nbsp;
<br /> &nbsp;
<p><h3>Evist Ghersi</h3></p>
<br /> &nbsp;
<p>It's Your Solutions Group,Vice - President <br /> and Consultant</p>
</div>
<div id="pie">Este es el pie</div>
</body>
</html>
y esta la hoja de estilos css
* {text-indent:0px; margin:0px; padding:0px; border:0px;}
body {text-align:center;}
#gloval {width:1024px; margin:4px auto;}
#cabecera {background-color:#cef6f5; width:1024px; height:60px; padding:10px 0px 10px 0px;}
#navegacion {background-color:#cef6f5; width:1024px;}
#contenido {background-color:#e0f8f7; width:1024px;}
#menu {background-color:#a9f5bc; width:160PX; float:left; text-align:left; margin-right:20px;}
#menu li {list-style:none; margin:24px 0px 24px 6px; padding:40px 5px 0px 5px; text-align:center;}
#pie {background-color:#663300; width:1024px;}
a {color:blue; text-decoration:none; display:block;}
a:link {}
a:visited {}
a:hover {color:red; text-decoration:underline; background-color:silver;}
p text-align:justify;}
h1 {font-size:2em; font-weight:bolt; text-decoration:underline; text-align:center;}
h2 {font-size:1.5em; font-weight:bolt; text-decoration:none; text-align:center;}
Hola
ya lo subiste a la red?
danos la url para verlo

si no, muestranos una captura diciendo que es lo que se mira mal,
mientras abro mis programas para ver los codigos

saludos
hola
te falta poner la apertura y el cierre de gloval

yy el pie en firefox està mas arriba, porque el la altura de menu, es mayor que la altura de contenido
contenido debe ser mayor
o le agregas espacios en blanco a contenido, o reduces menu

saludos