poti sa inlocuiesti in css clasa .menu cu asta:
Cod:
.menu {
	position:relative;        /* establish a menu-relative positioning context */
	float:none;                                     /* play nicely with others */
	margin:0 auto;
	left:0px;
	padding:0;
	border:0;
	height:18px;                                  /* the menu's overall height */
	width:650px;         /* we always want our menu to fill the available space */
	background:#000000;
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size:12px;         /* this (and also below) sets the menu's font size */
	border-bottom:1px solid black;        /* give us a black border underneath */
}
modificarile sunt
margin:0 auto;
left:0px;
width:650px; (cat tabelul negru de deasupra lui).