* {
	margin: 0;
	padding: 0;
}

h1 {
	font-size: 20px;
	font-family: sans-serif;
	font-weight: bold;
}

h2 {
	font: bold 14px sans-serif;
}

header, section, footer, aside, nav, article, hgroup {
	display: block;
}

body {
	text-align: center;
	background: gray;
}

.agrupar {
	width: 960px;
    border: 1px solid black;
	margin: 15px auto;
	background: white;
}

.cabecera {
	background: #FFFBB9;
	border: 1px solid #999999;
	padding: 20px;
}

.cabecera h1 {
	text-align: left;
}

.menu {
	background: #ccc;
	padding: 5px 15px;
	text-align: left;
}

.menu li {
	list-style: none;
	padding: 5px;
	font: bold 14px verdana;
	display: inline-block;
}

.seccion {
	margin: 20px;
	width: 600px;
	float: left;
}

article {
	background: #fffbcc;
	border: 1px solid #999;
	padding: 20px;
	margin-bottom: 15px;
}

time {
	color: #999;
}

article footer {
	text-align: right;
	margin-top: 20px;
}

.columna {
    width: 300px;
	float: left;
	margin: 20px 0;
}

.columna blockquote {
	border: 1px solid black;
	padding: 40px;
	background: #FFFBB9;
	margin-bottom: 20px;
}

.pie {
	clear: both;
	padding: 20px;
	background: #2d3436;
	color: #ffffff;
}

img {
	width: 80px;
	display: block;
	margin: 20px auto;
}