body {
    margin: 0;
    overflow: hidden;
}
#app-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
    margin: 0;
    padding: 0;
    background-color: #2aa848;
}
canvas {
    width: 100%;
    height: 100%;
    display: block;
}
#orientation-warning {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    font-size: 24px;
    text-align: center;
    padding-top: 50%;
    z-index: 1000;
}
@media (max-width: 768px) {
    canvas {
        width: 100vw;
        height: auto;
    }
}