.familytree,
.familytree ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.familytree {
  padding: 1rem;
  font-family: sans-serif;
}

.familytree ul {
  margin-left: 2rem;
  position: relative;
}

/* 子リストの縦線 */
.familytree ul::before {
  content: "";
  position: absolute;
  top: 0;
  left: -1rem;
  width: 1px;
  height: 100%;
  background: #666;
}

.familytree li {
  position: relative;
  padding: 0.5rem 0 0.5rem 1rem;
  white-space: nowrap;
}

/* 横線 */
.familytree li::before {
  content: "";
  position: absolute;
  top: 1.2rem;
  left: -1rem;
  width: 1rem;
  height: 1px;
  background: #666;
}

/* 最後の子で縦線を切る */
.familytree li:last-child::after {
  content: "";
  position: absolute;
  left: -1rem;
  top: 1.2rem;
  width: 1px;
  height: calc(100% - 1.2rem);
  background: white;
}

/* これを追加 */
.familytree > ul > li::before,
.familytree > ul::before {
  display: none;
}

.familytree span {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border: 1px solid #888;
  border-radius: 0.4rem;
  background: #fff;
}