*{
	padding:0;
	margin: 0;
}
html,body{
	background-color: #B2B2B2;
	font-family: arial;
}
nav, .nav-wrapper{
	position: fixed;
	background-color: transparent;
	transition: .5s;
}

h1#bienv{
	width: 50%;
	height: 50%;
	position: absolute;
	top:0;
	left:0;
	right:0;
	bottom:0;
	margin: auto;
	text-align: center;
	color:rgba(255,255,255,.8);
}

.brand-log{
	position: absolute !important;
	transition: .5s !important;
}
.cover{
	position: absolute;
	top:0;
	left:0;
	right:0;
	bottom:0;
	margin: auto;
	height: 100%;
	z-index: -1;
}
.cover.first{
	background-image: url(../img/codigo.jpg);
	background-size: cover;
	background-attachment: fixed;
	background-position: center;
}
.cover.second{
	top:200%;
}
.cover.third{
	top:400%;
	background-image: url(../img/mac.jpg);
	background-size: cover;
	background-attachment: fixed;
	background-position: center;
}
.large-top-space{
	padding-top: 200px;
}