#dashboard-container {
    position: relative;
    width: 400px;
    height: 400px;
    background: #eeeeee;
}

.canvas {
    position: absolute;
    width: 100%; 
    height: 100%; 
    overflow: hidden;
}

#canvas {
    width: 50%;
}

.canvas > canvas {
    position: relative;
    top: 50%;
    transform: translateY(-50%)
}

#compare-drag {
    position: absolute;
    left: 50%;
    bottom: 50%;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: black;
    transform: translateX(-50%);
}

#compare-slider {
    display: none;
    width: 2px;
    height: 100%;
    position: absolute;
    left: 50%;
    background: black;
}