.timeline ul {
    background: #fff;
    padding: 50px 0;
  }
  
  .timeline ul li {
    list-style-type: none;
    position: relative;
    width: 6px;
    margin: 0 auto;
    padding-top: 50px;
    background: #008daf;
  }
  
  .timeline ul li::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: inherit;
  }
  
  .timeline ul li div {
    position: relative;
    bottom: 0;
    width: 400px;
    padding: 15px;
    background: #FF7661;
  }
  
  .timeline ul li div::before {
    content: '';
    position: absolute;
    bottom: 7px;
    width: 0;
    height: 0;
    border-style: solid;
  }
  
  .timeline ul li:nth-child(odd) div { left: 45px; }
  
  .timeline ul li:nth-child(odd) div::before {
    left: -15px;
    border-width: 8px 16px 8px 0;
    border-color: transparent #F45B69 transparent transparent;
  }
  
  .timeline ul li:nth-child(even) div { left: -439px; }
  
  .timeline ul li:nth-child(even) div::before {
    right: -15px;
    border-width: 8px 0 8px 16px;
    border-color: transparent transparent transparent #F45B69;
  }
  
  time {
    display: block;
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 8px;
  }

  .timeline ul li::after { transition: background .5s ease-in-out; }

  .timeline ul li.in-view::after { background: #F45B69; }
  
  .timeline ul li div {
    visibility: hidden;
    opacity: 0;
    transition: all .5s ease-in-out;
  }
  
  .timeline ul li:nth-child(odd) div { transform: translate3d(200px, 0, 0); }
  
  .timeline ul li:nth-child(even) div { transform: translate3d(-200px, 0, 0); }
  
  .timeline ul li.in-view div {
    transform: none;
    visibility: visible;
    opacity: 1;
  }

  @media screen and (max-width: 900px) {

    .timeline ul li div { width: 250px; }
    
    .timeline ul li:nth-child(even) div { left: -289px; /*250+45-6*/
    }
    }
    
    @media screen and (max-width: 600px) {
    
    .timeline ul li { margin-left: 20px; }
    
    .timeline ul li div { width: calc(100vw - 150px); }
    
    .timeline ul li:nth-child(even) div { left: 45px; }
    
    .timeline ul li:nth-child(even) div::before {
      left: -15px;
      border-width: 8px 16px 8px 0;
      border-color: transparent #F45B69 transparent transparent;
    }
    }