body{
	background: #8D6464;
}
hr{
	margin-left: 20px;
	border: 1px solid #000000;
	clear: both;
}
.header{
	text-align: center;
	margin-left: 20px;
}
.center{
	text-align: center;
}
.a{
	width: 30%;
	float: left;
	margin-left: 20px;

}
.uno{
	color: #209B29;
	margin-left: 20px;
}
.dos{
	margin-left: 20px;
	width: 200px;
	border: 5px double ;
	float: left;
}
.tres{
	color: #0BBE2F;
	margin-left: 20px;
}
.cuatro{
	color: #637E68;
	margin-left: 20px;
}