body {
	font-family: sans-serif;
	background: #f5f5f5;
	display: flex;
	justify-content: center;
	align-items: center;
	min-height: 100vh;
	margin: 0;
}
.box {
	background: #fff;
	border-radius: 8px;
	box-shadow: 0 2px 12px rgba(0,0,0,.12);
	padding: 2.5rem 2rem;
	max-width: 480px;
	width: 100%;
	text-align: center;
}
h1 {
	font-size: 1.4rem;
	color: #c0392b;
	margin-bottom: .5rem;
}
p {
	color: #555;
	font-size: .95rem;
	line-height: 1.5;
}
button {
	margin-top: 1.5rem;
	padding: .75rem 2rem;
	background: #2980b9;
	color: #fff;
	border: none;
	border-radius: 5px;
	font-size: 1rem;
	cursor: pointer;
}
button:hover {
	background: #1a5f8a;
}
.note {
	font-size: .8rem;
	color: #999;
	margin-top: 1rem;
}