body {
    background-color: #f4f4f4;
    color: #111;
    font-family: sans-serif;
    font-size: 1.5em
}

ul {
    list-style-type: square;
}

main {
    margin-left: auto;
    margin-right: auto;
    max-width: 25em;
}

.border {
    border-style: solid;
    border-color: #999;
    border-width: 1px;
}

.pic {
    max-width: 250px;
}