body {
    margin: 0;
    padding: 0;
    color: rgba(255, 255, 255, 0.87);
    background-color: #000000;
    height: 100dvh;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("blur_background.jpg") center center / cover no-repeat;
    z-index: -1;
}

#app {
    width: 100%;
    height: 100dvh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    display: block;
    width: 100vw;
    height: 100dvh;
    box-shadow: 0 0 20px #000;
}