ul.timeline {
  list-style-type: none;
  position: relative;
  padding-left: 1.5rem;
}

ul.timeline:before {
  content: ' ';
  background: #1f1c1c;
  display: inline-block;
  position: absolute;
  left: 16px;
  width: 4px;
  height: 100%;
  z-index: 400;
  border-radius: 1rem;
}

li.timeline-item {
  margin: 20px 0;
}

.timeline-arrow {
  border-top: 0.5rem solid transparent;
  border-right: 0.5rem solid #fff;
  border-bottom: 0.5rem solid transparent;
  display: block;
  position: absolute;
  left: 2rem;
}

li.timeline-item::before {
  content: ' ';
  background: #000000;
  display: inline-block;
  position: absolute;
  border-radius: 50%;
  border: 3px solid #000000;
  left: 11px;
  width: 14px;
  height: 14px;
  z-index: 400;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
}

.text-gray {
  color: #999;
}