message: style(Navigation): fix lint issues
diff: left: 50%;
  opacity: 0;
  position: absolute;
  - transition: opacity 100ms ease-in-out;
  transform: translateX(-50%);
  + transition: opacity 100ms ease-in-out;
  width: calc(100% - #{$horizontal-padding * 2});
  will-change: opacity;
  }
  $separator-height: 70%;
  $separator-vertical-spacing: #{(100% - $separator-height) / 2};
  + $separator-color: rgba(color(pure), .5);
  // Create vertical separator between top-level nav items and dropdown
  &::after {
  - background-color: rgba(color(pure), .5);
  + background-color: $separator-color;
  + bottom: $separator-vertical-spacing;
  content: '';
  height: $separator-height;
  - position: absolute;
  left: 0;
  + position: absolute;
  top: $separator-vertical-spacing;
  - bottom: $separator-vertical-spacing;
  width: 1px;
  }
  