body {
     margin: 0;
     padding: 0;
     background-color: #000;
     display: flex;
     justify-content: center;
     align-items: center;
     min-height: 100vh;
     font-family: Arial, sans-serif;
}
 #gamebox {
     border: none;
     box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
     width: 700px;
     height: 500px;
     overflow: hidden;
     position: relative;
}
#loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 24px;
    z-index: 10;
}