body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    flex-direction: column;
}

.card {
    border: 2px solid black;
    padding: 20px;
    width: 300px;
    margin: 10px;
    text-align: center;
}

button {
    margin: 10px;
    padding: 10px;
}