
body {
	font-family: Helvetica;
	color: #111;
	overflow: hidden;
	margin: 0;
	background: #f2f2f2; 
	line-height: 1.5;
}
header {
    display: block;
    margin: 20% auto;
    text-align: center;
    font-size: 50px;
    font-weight: bold;
}
header span {
	position: relative;
    display: inline-block;
}
button {
    display: block;
    margin: 5px auto;
    padding: 5px;
    font-size: 15px;
}