* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    width: 100dvw;
    height: 100dvh;

    overflow: hidden;
}

canvas {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

canvas[crt] {
    display: none; 
}

#target {
    display: block;
}