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

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

#game {
    display: block;
    width: 100%;
    height: 100vh;
    background-color: transparent;
    margin: 0;
    padding: 0;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 10;
    position: absolute;
    top: 0;
    left: 0;
}

#canvas {
    position: absolute;
    margin: 0;
    padding: 0;
    background-color: #eee;
    width: 100vw;
    height: 100vh;
    z-index: 0;
}

#border-canvas {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    width: 100vw;
    height: 100vh;
    background: transparent;
    z-index: 5;
}