body {
    align-items: center;
    display: flex;
    justify-content: center;
    margin: 0;
    min-height: 100vh;
    text-align: center;
}

main {
    max-width: 400px;
    width: 100%;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}