* {
				margin:0 px;
				padding:0px;
			}
			
			#header {
				margin:auto;
				width:500px;
				font-family:Arial, Helvetica, sans-serif;
			}
			
			ul, ol {
				list-style:none;
			}
			
			.nav > li {
				float:left;
			}
			
			.nav li a {
				background-color:#000;
				color:#fff;
				text-decoration:none;
				padding:10px 12px;
				display:block;
			}
			
			.nav li a:hover {
				background-color:#434343;
			}
			
			.nav li ul {
				display:none;
				position:absolute;
				min-width:140px;
			}
			
			.nav li:hover > ul {
				display:block;
			}
			
			.nav li ul li {
				position:relative;
			}
			
			.nav li ul li ul {
				right:-140px;
				top:0px;
                			}
#boton1 {
    font-weight: bold;
    cursor: pointer;
    padding: 5px;
    margin: 0 10px 20px 0;
    border: 1px solid #ccc;
    background: #eee;
    border-radius: 8px 8px 8px 8px;
}

#boton2 {
    font-weight: bold;
    cursor: pointer;
    padding: 5px;
    margin: 0 10px 20px 0;
    border: 1px solid #ccc;
    background: #eee;
    border-radius: 8px 8px 8px 8px;
}