Several aspects of these effects make the shapes do more to render the basic slider functionality harder to perform than to enhance the appeal of using them. Because the shapes are much taller than the basic sliders underneath, the dividing edge will only change its position if the user knows to click anywhere along the bottom half of a given shape. When the dividing edge is dragged further toward one of the two ends of the shape, the three-dimensional depiction of that edge will appear to be further ahead of the slider handle's effective position. Therefore, viewers will often click on these shapes and fail to make the sliders move. For more information click here https://codepen.io/zephyo/pen/MZbLwV.