.timeline{
    --uiTimelineMainColor: var(--timelineMainColor, #222);
    --uiTimelineSecondaryColor: var(--timelineSecondaryColor, #fff);
  
    position: relative;
    padding-top: 3rem;
    padding-bottom: 3rem;
  }
  
  .timeline:before{
    content: "";
    width: 4px;
    height: 100%;
    background-color: var(--uiTimelineMainColor);
  
    position: absolute;
    top: 0;
  }
  
  .timeline__group{
    position: relative;
  }
  
  .timeline__group:not(:first-of-type){
    margin-top: 4rem;
  }
  
  .timeline__year{
    padding: .5rem 1.5rem;
    color: var(--uiTimelineSecondaryColor);
    background-color: var(--uiTimelineMainColor);
  
    position: absolute;
    left: 0;
    top: 0;
  }
  
  .timeline__box{
    position: relative;
  }
  
  .timeline__box:not(:last-of-type){
    margin-bottom: 30px;
  }
  
  .timeline__box:before{
    content: "";
    width: 100%;
    height: 2px;
    background-color: var(--uiTimelineMainColor);
  
    position: absolute;
    left: 0;
    z-index: -1;
  }
  
  .timeline__date{
    min-width: 65px;
    position: absolute;
    left: 0;
  
    box-sizing: border-box;
    padding: .5rem 1.5rem;
    text-align: center;
  
    background-color: var(--uiTimelineMainColor);
    color: var(--uiTimelineSecondaryColor);
  }
  
  .timeline__day{
    font-size: 2rem;
    font-weight: 700;
    display: block;
  }
  
  .timeline__month{
    display: block;
    font-size: .8em;
    text-transform: uppercase;
  }
  
  .timeline__post{
    padding: 1.5rem 2rem;
    border-radius: 2px;
    border-left: 3px solid var(--uiTimelineMainColor);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, .12), 0 1px 2px 0 rgba(0, 0, 0, .24);
    background-color: var(--uiTimelineSecondaryColor);
  }
  
  @media screen and (min-width: 641px){
  
    .timeline:before{
      left: 30px;
    }
  
    .timeline__group{
      padding-top: 55px;
    }
  
    .timeline__box{
      padding-left: 80px;
    }
  
    .timeline__box:before{
      top: 50%;
      transform: translateY(-50%);  
    }  
  
    .timeline__date{
      top: 50%;
      margin-top: -27px;
    }
  }
  
  @media screen and (max-width: 640px){
  
    .timeline:before{
      left: 0;
    }
  
    .timeline__group{
      padding-top: 40px;
    }
  
    .timeline__box{
      padding-left: 20px;
      padding-top: 70px;
    }
  
    .timeline__box:before{
      top: 90px;
    }    
  
    .timeline__date{
      top: 0;
    }
  }
  
  .timeline{
    --timelineMainColor: #C90F40;
    font-size: 16px;
  }
  
  /*
  =====
  DEMO
  =====
  */
  
  @media (min-width: 768px){
  
    html{
      font-size: 62.5%;
    }
  }
  
  @media (max-width: 767px){
  
    html{
      font-size: 55%;
    }
  }
  
  body{
    font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Open Sans, Ubuntu, Fira Sans, Helvetica Neue, sans-serif;
    font-size: 1.6rem;
    color: #222;
  
    background-color: #f0f0f0;
    margin: 0;
    -webkit-overflow-scrolling: touch;   
    overflow-y: scroll;
    
    display: flex;
    flex-direction: column;
  }
  
  p{
    margin-top: 0;
    margin-bottom: 1.5rem;
    line-height: 1.5;
  }
  
  p:last-child{
    margin-bottom: 0;
  }
  
  .page{
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    order: 1;
  }