#hscroll-bar {
  height: 4px;
  position: fixed;
  top: var(--hscroll-top);
  bottom: var(--hscroll-bottom);
  left: 0;
  z-index: 3000;
  -webkit-backface-visibility: hidden;
  -moz-backface-visibility: hidden;
  backface-visibility: hidden
}
#hscroll-bar-inner {
  box-shadow: var(--hscroll-shadow);
  height: 100%;
  background-color: var(--hscroll-color);
}