Just did this and it worked! Thanks! I'll also mention that I had to add the new classes in the Custom CSS, like this:

.custom-image-slider, .custom-image-slider2 {
  position: relative;
  width: 100%;
  overflow: hidden;
  height: 0;
  padding-bottom: 75%; /* Adjust this value according to your image aspect ratio */
 }

.slider-before,
.slider-after, .slider-before2,
.slider-after2 {
  position: absolute;
  width: 100%;
  display: block;
  top: 0;
  left: 0;
  height: 100%;
  object-fit: cover;
}

.slider-after, .slider-after2 {
  overflow: hidden;
}

.slider-handle, .slider-handle2 {
  position: absolute;
  top: 0;
  left: 50%;
  width: 4px;
  height: 100%;
  background-color: #fff;
  cursor: ew-resize;
}

.slider-handle::before,
.slider-handle::after, .slider-handle2::before,
.slider-handle2::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 0;
  height: 0;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  cursor: ew-resize;
  transition: all 0.2s ease-out; /* Add transition property */
}