.rc-slider {
  height: 50px !important;
  padding: 0 !important;
  z-index: 1000 !important; /* slider above everything */
  position: relative !important;
}

.rc-slider-handle {
  height: 650px !important; /* graphs (300+300) + slider (50) = 650px total */
  width: 2px !important;
  background-color: #6a5acd !important;
  border-radius: 0 !important;
  border: none !important;
  margin-top: -325px !important; /* half the height to center handle */
  cursor: ew-resize !important;
  opacity: 1 !important;
  z-index: 1000 !important; /* handle always on top */
}

.rc-slider-track,
.rc-slider-rail {
  background-color: transparent !important; /* remove slider background */
}

/* Remove all slider labels completely (numbers and dates) */
.rc-slider-mark,
.rc-slider-mark-text {
  display: none !important;
}