body {
	background-image: url(../img/fondo.jpg);
	background-position: center;
	background-size: cover;
	background-repeat: no-repeat;
	background-attachment: fixed;
	margin: 0;
	height: 100%;
	font-family: 'Exo', sans-serif;
}

nav {
	position:fixed;
	width: 100%;
	background-color: rgba(0,0,0,.5); 
	padding:15px;
	z-index:10;
	text-align: center;
}

nav a {
	color:#fff;
	font-size:25px;
	text-decoration: none;
	padding:0 15px;
	transition:all .7s;
	text-shadow: 0px 0px 0px #000
}
nav a:hover {color:#FF642D; text-shadow: 0px 0px 3px #000}

h1 {
	font-size: 40px;
	color:rgba(255,255,255,.5);
	position:absolute;
	top: calc(50% - 26px);
	text-shadow: 0px 0px 3px black;
	width: 100%;
	text-align: center;
}

#uno,#dos,#tres {position: absolute;padding-top: 300px;outline: none;}

#uno {top: 500px; right: 25px;}

#dos {top: 1500px; left: 35px;}

#tres {top: 2500px;right: 15px; padding-bottom:100px;}