table th {
    font-weight: bold;
}

th td {
    border-bottom: 1px solid #ddd;
}

table.alternate tr:nth-child(odd) {
    background-color: #888888;
}

table.alternate tr:nth-child(even) {
    background-color: #BBBBBB;
}

table tr {
    text-align: center;
}