body {
    font-size: 12px;
    font-family: monospace;
    text-align: justify;
    background-color: #ddd;
}
h1 {
    font-size: 20px;
    text-align: center;
}
h3 {
    font-size: 16px;
}
div {
    padding-bottom: 5px;
    border-bottom: 1px solid;
    margin-bottom: 10px;
}