html {
    margin: 0;
    padding: 0;
}

body {
    height: 100vh;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

#left-panel {
    z-index: 1;
    position: absolute;
    top: 20px;
    left: 20px;
    user-select: none;
}

#container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
}

#container > svg {
    position: absolute;
    display: block;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}