.xtd-timeline{
  display: flex;
  flex-direction: column;
  position: relative;

  &::before{
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 1.5rem;
    bottom: 0;
    border-left: 1px solid currentColor;
    opacity: 0.3;
  }

  &__item{
    padding-left: 4rem;
    padding-right: 2rem;
    position: relative;

    & + &{
      margin-top: 2rem;
    }

    &::before{
      content: attr(data-title);
      padding-bottom: 2rem;
      display: block;
      line-height: 1.5;
    }
    &::after{
      content: '';
      display: block;
      position: absolute;
      top: 0;
      left: 1.5rem;
      height: 1.5rem;
      margin-left: -2px;
      width: 4px;
      background-color: currentColor;
      opacity: 1;
    }

    @include media-breakpoint-up(md) {
      width: 50%;
      padding-left: 0;
      padding-right: 4rem;

      & + &{
        margin-top: -2rem;
      }

      &::before{
        position: absolute;
        top: 4rem;
        left: 100%;
        padding-left: 4rem;
        padding-bottom: 0;
        width: 100%;
      }
      &::after{
        top: 4rem;
        left: 100%;
      }

      &:nth-child(2n){
        margin-left: 50%;
        padding-left: 4rem;
        padding-right: 0;

        &::before{
          padding-right: 4rem;
          text-align: right;
          left: auto;
          right: 100%;
        }
        &::after{
          left: auto;
          right: 100%;
          margin-left: auto;
          margin-right: -2px;
        }
      }
    }

    @include media-breakpoint-up(lg) {
      width: 50%;
      padding-left: 0;
      padding-right: 6rem;

      & + &{
        margin-top: -3rem;
      }

      &::before{
        position: absolute;
        top: 6rem;
        left: 100%;
        padding-left: 6rem;
        padding-bottom: 0;
        width: 100%;
      }
      &::after{
        top: 6rem;
        left: 100%;
      }

      &:nth-child(2n){
        margin-left: 50%;
        padding-left: 6rem;
        padding-right: 0;

        &::before{
          padding-right: 6rem;
          text-align: right;
          left: auto;
          right: 100%;
        }
        &::after{
          left: auto;
          right: 100%;
          margin-left: auto;
          margin-right: -2px;
        }
      }
    }

  }

  @include media-breakpoint-up(md) {
    &::before{
      left: 50%;
      top: 2rem;
      bottom: 2rem;
    }
  }
  @include media-breakpoint-up(lg) {
    &::before{
      left: 50%;
      top: 3rem;
      bottom: 3rem;
    }
  }
}