html, body {
    margin: 0;
    background-color: rgb(0,0,0);
    overflow: hidden;
}
#output {
    position: absolute;
    top:  10px;
    left: 10px;
}
canvas {
    position: absolute;
    top: 0px;
    left: 0px;
    height:  100%;
    width:  100%;
}
#bg{
    position: absolute;
    top: 0px;
    left: 0px;
    height:  100%;
    width:  100%;
}
#debug{
    position: absolute;
    top: 0px;
    left: 0px;
    height:  100%;
    width:  100%;
}