.volume-bar {
  width: 150px;
  display: flex;
  justify-content: center;
  transition: 0.3s;
  opacity: 0;
  visibility: hidden;
  position: fixed;
}
.fade-in {
  opacity: 1;
  visibility: visible;
}

.vol-range {
  -webkit-appearance: none;
  appearance: none;
  background-color: #fff;
  height: 2px;
  width: 100%;
  border-radius: 6px;
}

.vol-range:focus,
.vol-range:active
{
  outline: none;
}

.vol-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  position: relative;
  border: 2px solid rgba(0, 0, 0, 1);
  width: 16px;
  height: 16px;
  display: block;
  background-color: #fff;
  border-radius: 50%;
  -webkit-border-radius: 50%;
}

.vol-range:active::-webkit-slider-thumb {
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 1);
  transition: .3s;
}