.timeline{position:relative;border-left:2px solid #ccc;padding-left:30px;margin:0 auto;max-width:300px}.timeline-item{position:relative;margin-bottom:40px}.timeline-marker{position:absolute;left:-43px;top:0;width:20px;height:20px;background:#ff4500;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 2px #ccc}.timeline-content h4{margin:50;color:#333;font-weight:600}@media (max-width: 640px){.timeline{padding-left:20px}.timeline-marker{left:-33px}.timeline-content h4{font-size:1rem}}