.double-range {
  position: relative;
  width: 100%;
}

.double-range .slider-track {
  width: 100%;
  height: 0.2em;
  position: absolute;
  margin: auto;
  top: 0;
  bottom: 0;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.5);
}

.double-range > input[type="range"] {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  position: absolute;
  margin: auto;
  top: 0;
  bottom: 0;
  width: 100%;
  left: 0;
  outline: none;
  background-color: transparent;
  pointer-events: none;
}

.double-range > input[type="range"]::-webkit-slider-runnable-track {
  -webkit-appearance: none;
  height: 5px;
}

.double-range > input[type="range"]::-moz-range-track {
  -moz-appearance: none;
  height: 5px;
}

.double-range > input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  margin-top: -1px;
  height: 0.6em;
  width: 0.6em;
  background-color: #20a8d8;
  cursor: grab;
  pointer-events: auto;
  border-radius: 50%;
}

.double-range > input[type="range"]::-moz-range-thumb {
  -moz-appearance: none;
  height: 0.6em;
  width: 0.6em;
  cursor: grab;
  border: none;
  border-radius: 50%;
  background-color: #20a8d8;
  pointer-events: auto;
}

.double-range > input[type="range"]:active::-webkit-slider-thumb {
  background-color: #ffffff;
  border: 3px solid #20a8d8;
  cursor: grabbing;
}