body {
    margin: 0;
    background: #0f0f0f;
    font-family: Arial, sans-serif;
    color: white;
    text-align: center;
}

.container {
    margin-top: 50px;
}

.logo {
    width: 150px;
    border-radius: 50%;
}

.btn {
    display: block;
    width: 250px;
    margin: 15px auto;
    padding: 15px;
    background: #ff0000;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-size: 18px;
}