* {
	margin: 0;
	padding: 0;
	border: none;
	outline: none;
	font-family: Roboto, Arial, sans-serif;
	font-weight: normal;
	font-size: 16px;
	line-height: 20px;
}
input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder {
    color: #aaa;
}
html {
	background-color: #ddd;
}

section {
	display: table;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}
article {
	display: table-cell;
	vertical-align: middle;
	padding-bottom: 150px;
}
div {
	margin: 0 auto;
	width: 400px;
	box-shadow: 0 0 5px #666;
	background-color: #bbb;
}
div h1 {
	background-color: #eee;
	color: #333;
	padding: 10px 20px;
	border-bottom: solid 1px #888;
}
div form {
	padding: 20px;
}
div input[type="text"],
div input[type="password"] {
	color: white;
	background-color: #555;
	width: 100%;
	padding: 5px 34px 5px 10px;
	border-radius: 8px;
	box-shadow: inset 0 0 8px #000;
	-moz-box-sizing: border-box;
	-webkit-box-sizing: border-box;
	box-sizing: border-box;
	margin-bottom: 20px;
}
div form input[type="submit"] {
	width: 100%;
	background: -webkit-linear-gradient(top, rgba(255, 255, 255, 0.4), rgba(0, 0, 0, 0.1));
	background: -moz-linear-gradient(top, rgba(255, 255, 255, 0.4), rgba(0, 0, 0, 0.1));
	background: -ms-linear-gradient(top, rgba(255, 255, 255, 0.4), rgba(0, 0, 0, 0.1));
	background: -o-linear-gradient(top, rgba(255, 255, 255, 0.4), rgba(0, 0, 0, 0.1));
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.4), rgba(0, 0, 0, 0.1));
	background-color: #6c1;
	border: solid 1px #4a0;
	box-shadow: 0 2px 2px -1px rgba(0, 0, 0, 0.7);
	font-weight: bold;
	color: #222;
	text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.4);
	text-align: center;
	cursor: pointer;
	padding: 5px 30px;
	border-radius: 8px;
}
div form.enviando input[type="submit"] {
	background-color: #ddd;
	border: solid 1px #bbb;
	text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.7);
	color: #555;
}


#centros {
	margin: 60px auto;
	width: 960px;
	padding-bottom: 30px;
}
#centros a {
	margin: 30px 0 0 30px;
	float: left;
}
#centros:after {
	content: "";
	display: block;
	clear: both;
}
#centros img {
	width: 280px;
	box-shadow: 0 0 6px #555;
}