#progress {
  position: fixed;
  top: 0;
  left: -6px;
  width: 0%;
  height: 2px;
  background: red;
}

#progress:before,
#progress:after {
  content: "";
  position: absolute;
  height: 2px;
  opacity: 0.6;
  box-shadow: red 1px 0 6px 1px;
  border-radius: 100%;
}

#progress:before {
  width: 20px;
  right: 0;
  clip: rect(-6px, 22px, 14px, 10px);
}

#progress:after {
  width: 180px;
  right: -80px;
  clip: rect(-6px, 90px, 14px, -6px);
}