i {
    font-size: 3rem;
    padding-left: 20px;
  }
  
  .timeline {
    position: relative;
    margin: 50px 0;
}

.timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background-color: black;
    margin-left: -1px;
}

.timeline-item {
    margin-bottom: 50px;
    position: relative;
    margin-left: 1.8rem;
}

.timeline-item::before,
.timeline-item::after {
    content: "";
    display: table;
}

.timeline-item::before {
    content: attr(data-year);
    top: 0;
    right: 100%;
    font-size: 0.85em;
    padding: 0.5em 0.5em;
    background-color: black;
    color: #fff;
    border-radius: 0.25em;
    white-space: nowrap;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
}

.timeline-item::after {
    clear: both;
}

.timeline-content {
    padding: 10px;
    border-radius: 0.25em;
    background-color: #f8f9fa;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}