body{
	background-image: url("picture/background.png");
	background-repeat: no-repeat;
	background-attachment: fixed;
	background-size: cover;
	font-family: Arial, Helvetica, sans-serif;
	margin:10px auto;
	width: 60%;
}

table, td, tr{
	margin-left: auto; 
	margin-right: auto;
	text-align: center; 
	vertical-align: center;
	padding: 25px;
}