devdocs/assets/stylesheets/components/_path.scss

._path {
  position: absolute;
  z-index: $noticeZ - 1;
  bottom: 0;
  left: $sidebarWidth;
  right: 0;
  height: 2rem;
  line-height: 2rem;
  padding: 0 .375rem;
  font-size: .875rem;
  background: $pathBackground;
  box-shadow: inset 0 1px $pathBorder;

  @media #{$mediumScreen} { left: $sidebarMediumWidth; }

  ._sidebar-hidden & { left: $sidebarHiddenWidth; }

  ~ ._container { padding-bottom: 2rem; }
  a:focus { outline: 0; }
}

._path-item {
  position: relative;
  display: inline-block;
  vertical-align: top;
  margin: 0 1rem 0 0;
  padding: 0 .375rem;
  color: $textColor;

  &:first-child:before {
    content: '';
    float: left;
    width: 1rem;
    height: 1rem;
    margin: .5rem .375rem 0 0;
    @extend %doc-icon;
  }

  & + &:after {
    content: '';
    position: absolute;
    top: 50%;
    right: 100%;
    width: 1rem;
    height: 1rem;
    margin: -.5rem 0 0 0;
    pointer-events: none;
    @extend %icon, %icon-path;
  }
}