body {
    font-family: system-ui, sans-serif;
    padding: 2rem;
    background: #f4f4f9;
    text-align: center;
}

.card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

button a,
button a:hover {
    color: #fff;
    text-decoration: none;
}

button {
    display: inline-block;
    text-align: center;
    vertical-align: middle;
    border: 1px solid transparent;
    margin-top: 1em;
    padding: 0.5rem 2.5rem;
    font-size: 1.1rem;
    line-height: 1.5;
    border-radius: 0.5rem;
    background-color: #343a40;
}

button:hover {
    background-color: #23272b;
    text-decoration: underline white;
}