@mixin step-status($color, $tail-color: null) {
  @if not $tail-color {
    $tail-color: $color;
  }
  &::before {
    background-color: $tail-color;
  }
  .step-dot {
    border-color: $color;
    background-color: $color;
  }
  .step-icon {
    color: $color;
  }
}