postal/app/assets/stylesheets/application/elements/_bar.scss

.bar {
  background:$darkBlue;
  border-radius:10px;
  display:inline-block;
  height:5px;
  width:100%;
  overflow:hidden;
}

.bar__inner {
  background:$blue;
  display:inline-block;
  border-radius:10px;
  height:5px;
  width:50%;
}