Responsive Cornerstone Timeline

x-responsive-timeline.css

@media (min-width: 768px){
  .timeline {
    position: relative;
    z-index: 1;
  }
  .timeline::before {
    content:"";
    position: absolute;
    z-index: 1;
    top: 0;
    bottom: 0;
    display: block;
    left: 50%;
    border-left: 1px solid #000; /*change these border values to suit your liking*/
  }
  .timeline .x-container:nth-child(odd)::after {
    content:"";
    z-index: 99999;
    position: absolute;
    right: 50%;
    top: 50%;
    width: 15px;
    height: 15px;
    transform: translateX(50%);
    border-radius: 12px;
    background: #000;
    border: 2px solid rgb(224,224,224);
  }
  .timeline .x-container:nth-child(odd)::before {
    content:"";
    z-index: -1;
    position: absolute;
    right: 50%;
    top: calc(50% + 7px);
    width: 150px;
    height: 1px;
    background: #000;
  }
  .timeline .x-container:nth-child(even)::after {
    content:"";
    z-index: 99999;
    position: absolute;
    left: 50%;
    top: 50%;
    width: 15px;
    height: 15px;
    transform: translateX(-50%);
    border-radius: 12px;
    background: #000;
    border: 2px solid rgb(224,224,224);
  }
  .timeline .x-container:nth-child(even)::before {
    content:"";
    z-index: -1;
    position: absolute;
    left: 50%;
    top: calc(50% + 7px);
    width: 150px;
    height: 1px;
    background: #000;
  }
  .timeline .x-container {
    display:flex!important;
  }
  .timeline .x-container:nth-child(even) {
    flex-direction: row-reverse;
  }
  .timeline .x-container:nth-child(even) .x-column {
    margin-right: 0;
  }
  .timeline .x-container:nth-child(odd) .x-column:nth-child(1) {
    text-align: right;
  }
  .timeline .x-container .x-column:nth-child(1) {
    box-shadow:0px 5px 20px rgba(0,0,0 ,0.2);
  }
}
.timeline .x-column:nth-child(1) { 
    background-color: #fff!important;
}