mystyle.css

body {
    background-color: white;
    font-family: Arial, Helvetica, sans-serif;
}
h1 {
    color: darkgreen;
    text-align: center;
}
h3 {
    color: darkgreen;
}
.vericaltext {
 writing-mode: vertical-lr;
 text-orientation: upright;
}

table, th, td {
    border: 1px solid;
    text-align: center;
    vertical-align: top
}
th > a {
    color: lightgreen;
}
th {
    background-color: darkgreen;
    color: white;
}
tr:nth-child(even) {
    background-color: white;
    color: green;
}
tr:nth-child(odd) {
    background-color: green;
    color: white;
}