message: style(IndexBar): increase right padding to 8px
diff: }
  &__index {
  - padding: 0 @padding-base 0 @padding-md;
  + padding: 0 @padding-xs 0 @padding-md;
  font-weight: @font-weight-bold;
  font-size: @index-bar-index-font-size;
  line-height: @index-bar-index-line-height;
  