body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
}

main {
    display: flex;
    max-width: 300px;
    border: 1px solid #cccccc;
    border-radius: 20px;
    align-self: center;
    flex-direction: column;
    padding: 12px;
}

a {
    display: block;
    color: white;
    background-color: DarkBlue;
    padding: 12px;
    border-radius: 20px;
    text-align: center;
    text-decoration: none;
}