Algo estoy haciendo mal y no se que puede ser, llevo 2 dias revisando y no encuentro solución, porfavor necesito ayuda.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<link rel="stylesheet" href="estilo-general.css"
type="text/css" media="all">
<title>Page title</title>
</head>
<body>
<div id="global">
<div id="cabecera">Bienvenidos a mi Web</div>
<div id="navegacion">Barra de Navegación</div>
<div id="contenido"><p>Esta será la zona principal de la web ghghghghghghghgghg
ghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh hhhhhh ffffffffffffffffffffffffff
hggggggggggggggggggggggggggggggggggggggggggggg fffffffffffffffffffffffffffffffff
hggggggggggggggggggggggggggggggggggggggggggf ffffffffffffffffffffffffffffffff
hggggggggggggggggggggggggggggggggggggggf fffffffffffffffffffffffffffffffffff
hggggggggggggggggggggggggggggggggggggggggggg fffffffffffffffffffffffffffffff
hggggggggggggggggggggggggggggggggggggggggggggg</p></div>
<div id="menu">
<ul><li><a href="#">Enlace 1</a></li><li><a href="#">Enlace 2</a></li><li><a href="#">Enlace 3</a></li></ul>
</div>
<div id="pie">Este es el pié de página</div>
</div>
</body>
</html>
* {margin:0px; padding:0px; border:0px}
body {text-align:center;}
a {color: brown ; text-decoration:none; display:block}
a:link {}
a:visited {}
a:hover {color:red ; text-decoration:underline; background-color: silver}
a:active {}
p {text-align:justify}
#global {width:800px; margin:4px auto;}
#cabecera {background-color:pink;}
#navegacion {background-color:gray;}
#contenido {background-color:orange;width:800px; float:left;}
#menu {background-color:yellow; width:150px; float:left; text-align:left}
#pie {background-color:brown;}
#menu li {list-style:none; margin:4px 0px 4px 6px}