* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    overflow: hidden;
}
div {
    width: 100vw;
    height: 100vh;
    background-color: #000;
    display: flex;
    justify-content: center;
    text-align: center;
    align-items: center;
}
#canvas {
    background: #000;
}