body {
    margin: 0;
    min-height: 100vh;
    background-image: url('../images/mahjtable.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    font-family: Arial, sans-serif;
}

.main-container {
    background-color: rgba(255, 255, 255, 0.92); /* Weiße Box mit leichter Transparenz */
    color: #333;
    max-width: 900px;
    margin: 40px auto; 
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}