.timeline {
    position: relative;
    max-width: 900px;
    margin: auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: #0dcaf0;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
}

.timeline-item {
    padding: 20px 40px;
    position: relative;
    width: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    right: -8px;
    background-color: #0dcaf0;
    border: 3px solid #fff;
    top: 30px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item.left {
    left: 0;
    text-align: right;
}

.timeline-item.right {
    left: 50%;
}

.timeline-item.right::after {
    left: -8px;
}

.timeline-content {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 .125rem .25rem rgba(0,0,0,.075);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .timeline::after {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 25px;
        text-align: left;
    }

    .timeline-item.left,
    .timeline-item.right {
        left: 0;
    }

    .timeline-item::after {
        left: 12px;
    }
}