.ics-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  overflow: hidden;
}

.ics-container img {
  width: 100%;
  display: block;
}

.ics-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  overflow: hidden;
}

.ics-slider {
  position: absolute;
  top: 0;
  left: 50%;
  width: 4px;
  height: 100%;
  background: #fff;
  cursor: ew-resize;
  z-index: 10;
}

.ics-slider::after {
  content: '';
  position: absolute;
  top: 50%;
  left: -8px;
  width: 20px;
  height: 20px;
  background: red;
  border-radius: 50%;
  transform: translateY(-50%);
}