estilo.css

body {
	font-family: Helvetica, Arial, "sans-serif";
	font-size: 13px;
	color: #333;
}

h3{
	text-align:center;
}

#contenedor {
	position: relative;
	width: 860px;
	height: 100%;
	margin: 0 auto;
	padding: 10px;
	border: 1px solid #999;
}

#encabezado {
	position: relative;
	height: 118px;
	padding: 10px;
	background: #fff;
	border: 1px solid #999;
}
#encabezado img {
	float:left;
}

ul {
    background-color:#fff;
    color:#000;
    margin:0;
    padding:0;
    list-style:none;
}

li {
float:left;
}

a {
display:block;
width:100px;
}