header, section, footer, aside, nav, article{display: block;}
body{text-align: center;}
#envoltura{
	background-color: rgba(88, 130, 139,0.5);
	width: 960px; 
	margin: 15px auto; 
	text-align: left;
	padding: 50px 30px 20px 80px;}
#cabecera{
	background-color: rgba(94, 147, 135,0.8);
	width: 880px; 
	padding: 25px;
	margin: 10px auto; 
	}
#cabecera h1{text-align: right;}
#menu{
	background-color: rgba(242, 242, 153, 0.5);
	width: 960px; 

	text-align: left;}
#menu li{display: inline-block;padding: 10px 25px 10px 25px;}
body {background-image: url("../img/fondo1.jpg");}
#seccion {float: left;
			width: 90%;
			border-radius: 20px;
			margin: 10px;
			padding: 10px;
		background-color: rgba(242, 236, 30,0.5);}
article {float: left;
			width: 90%;
			margin: 5px;
			padding: 10px;
		background-color: rgba(242, 236, 230,0.5);}

#pie {clear: both;
	background-color: rgba(255, 255, 255,0.5);
			text-align: center;
			padding: 5px;
			margin: 5px;
			margin-top: 10px;}