* {
	margin:0;
	padding:0;
}

body{
	background:#FFFFFF;
	bottom:50px;
}

	
.contenido{
	width:1000px;
	margin:20px auto;
	text-align:justify;
}

   
.ir-otra{
	display: inline-block;
	padding:20px;
	background:#8B4513;
	font-size:20px;
	color:#F0E68C;
	cursor:pointer;
	position:fixed;
	top:0px;
	padding-top:300px;
	padding-bottom:250px;
	bottom:0px;
	right:0;
	
}

.ir-ante{
	display: inline-block;
	padding:20px;
	background:#8B4513;
	font-size:20px;
	color:F0E68C;
	cursor:pointer;
	position:fixed;
	top:0px;
	padding-top:300px;
	padding-bottom:250px;
	bottom:0px;
	left:0;
}