body {
font-family:Georgia, 'Times New Roman', Times, serif;
}

h1 {
	text-align:center;
}

table {
border-collapse:collapse; width:600px;
margin-left:auto;
margin-right:auto;
}

tr:nth-child(odd) {
background-color: #ddd;
}

th, td {
border: 1px solid Black; padding:3px;
}