#reading-progress {
  position: fixed;
  top: 0px;
  width: 0.2em;
  height: 100vh;
  margin: 0px;
  padding:0;
  left: 0px;
  z-index: 999999;
}

#reading-progress .bar {
  width: 100%;
  max-width: 0.2em;
  position: fixed;
  top: 0px;
  left:0;
  z-index: 99;
  background-color:rgb(var(--primaryColor));
}