.whippet-timeline-number {
  --line-thickness: 4px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  height: 100%;
  position: relative;
}
.whippet-timeline-number .number {
  width: var(--size);
  height: auto;
  aspect-ratio: 1/1;
  background: var(--background-color);
  color: var(--text-color);
  border-radius: 1000px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.whippet-timeline-number:before, .whippet-timeline-number:after {
  content: "";
  width: var(--line-thickness);
  background: var(--background-color);
  position: absolute;
  left: calc(50% - var(--line-thickness) / 2);
}
.whippet-timeline-number:before {
  height: var(--top-line-height);
  bottom: calc(50% + var(--size) / 2);
}
.whippet-timeline-number:after {
  height: var(--bottom-line-height);
  top: calc(50% + var(--size) / 2);
}