body,
* {
    font-family: Arial, sans-serif;
}

.certificate-container {
    background: #ededed;
    padding: 2em;
    text-align: center;
    margin: 2em 0;
}

.certificate-container h2 {
    margin: 0em 0 1em 0em;
}

main {
    max-width: 450px;
    padding: 1em;
    margin: 0 auto;
}

footer {
    text-align: center;
    font-size: 2em;
}

footer a {
    text-decoration: none;
}