body {
    margin-left: auto;
    margin-right: auto;
    max-width: 84ch;
    min-width: 44ch;
}


header {
    text-align: center;
}

ul {
list-style-type: none;
font-size: 16px;
}

li {
    margin-left: -4ch;
}

main {
    font-size: 17px;
    padding-left: 2ch;
    padding-right: 2ch;
}

td {
    padding-left: 2ch;
    padding-right: 4ch;
}

footer {
    font-size: 10px;
    text-align: center;
}