Breite der li gleich machen

#hauptnavi {
	margin: 0px;
	width:473px;
	height: 38px;
	background:#99ABCD;
	border-top:1px solid #99ABCD;
	border-bottom:1px solid #DF2111;
}

#rot {background-color:#FC284C;
	}
	
#orange {background-color:#FCA044;
	}
	
#gelb {background-color:#FFFF00;
	}
#grün {background-color:#00CC00;
	}
#blau {background-color:#0000FF;
	}

#hauptnavi ul {
margin:0 40px;
padding:0;
}


#hauptnavi li {
	display:block;
	float:left;
	padding: 10px 0;
        margin:0 px;
	border-right:2px solid #DF2111;
	font-size:12px;
	line-height: 38px;
	width: 70px;
}

#hauptnavi li a:link, #hauptnavi li a:visited  {
	display:block;
	text-decoration:none;
	color:#3C0763;
	line-height: 38px;
	width: 70px;
	padding: 10px;

}

#hauptnavi li a:hover {
	display:block;
	text-decoration:none;
	background-color:#D8E5E7;
	padding: 10px;
	line-height: 38px;
	width: 70px;
	margin:0px;	
}