body {
    margin: 0;
    overflow: hidden;
    font-size: 0;
}

canvas {
    background: whitesmoke;
    width: 100vw;
    height: 100vh;
}

p {
    position: fixed;
    left: 0;
    bottom: 5px;
    color: #fff;
    z-index: 10;
    font-size: 16px;
    font-family: Helvetica, Verdana, sans-serif;
    opacity: 0.5;
    width: 100%;
    text-align: center;
    margin: 0;
}