h1 {
	text-align: center;
	margin: 15px 0;
}

body {
	margin: 0;
	font-family: sans-serif;
}

.button {
	display: block;
	margin: 0 auto;
	width: 250px;
	padding: 2px;
	
	text-align: center;
	text-decoration: none;
	
	border: 1px solid black;
	background: #00aaff;
	color: white;
}

.hidden {
	display: none !important;
}

button {
	background-color: #4CAF50;
	border: none;
	color: white;
	margin: 5px;
	padding: 5px;
	text-align: center;
	text-decoration: none;
	display: inline-block;
	font-size: 16pt;
}

button:hover {
	background-color: #4C8F50;
}