* {
	margin: 0px;
	padding: 0px;
}

body {
	background-color: black;

}





nav ul {
    text-align: center;
	float: left;
	padding: 0;
	font-size:30px;
	text-shadow: 5px 3px 3px red;    
    background-color: #000000;
    width: 100%
}

nav li {	
list-style-position: inside;
    display: inline-block; /*agregar "display: inline-block;""  en lugar de "float: left;" permite centrar el menú */
}

nav li a {
    display: block;
    color: white;
    text-align: center;
    padding: 20px;
    text-decoration: none;
}

nav li a:hover {
    background-color: #111111;
}






div iframe {
       	position: relative;
       	width: 100%;
        height: 1000px;
    
}