html,body {
    background-color: #000000;
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    touch-action: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas{
    display: inline-block; 
    margin: 0 auto;
    width: 100%;
    max-height: 100%;
    vertical-align: middle;
    height: auto !important;
    width: auto !important;
}