table.envOutput {
    border: 1px solid black;
}

table.envOutput tr:nth-child(odd) {
    background:#cfcfcf;
}

table.envOutput tr:nth-child(2n) {
    background:white;
}

table.envOutput tr:nth-child(1) td {
    background: blue;
    color: white;
    border: 1px solid black;
}