body {
    color: #dfdfdf;
    background: #1f1f1f;
    font-family: monospace;
    max-width: 512px;
    margin: auto;
}
main {
    padding: 16px;
}
article {
    border: 1px solid #dfdfdf;
    background: #1f1f1f;
    padding: 16px;
    margin: 16px 0px 0px 0px;
}