body
{
    position: absolute;
    top: 0px;
    bottom: 0px;
    left: 0px;
    right: 0px;
}

#container
{
    position: relative;
    width: 100%;
    height: 100%;
    border: 1px solid blue;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#display-container {
    position: relative;
    background: teal;
    width: 100%;
    flex-grow: 1;
    overflow: hidden;
}

#controls-container {
    flex-shrink: 0;
    padding: 5px;
}

#display-container * {
    position: absolute;
    border: 1px solid orangered;
    width: 100%;
    height: 100%;
    transform-origin: top left;
    box-sizing: border-box;
    /* transition: 0.5s all; */
}

#display-container img {
    object-fit: contain;
}

#display-container canvas
{
    pointer-events: none;
}