:root {
    font-family: Arial, Helvetica, sans-serif;
    background-color: cornflowerblue;
}

table {
    width: 30%;
    margin: auto;
    background-color: white;
}

table tr:nth-child(odd) {
    background-color: rgb(190, 211, 251);
}

table tr td {
    text-align: center;
}