body {
  margin: 30px;
  font-family: sans-serif;
}

h2 {
  margin: 20px 0;
  font-size: 20px;
  font-weight: bold;
}

.menu {
  display: flex;
}

.menu li a {
  display: block;
  padding: 5px 10px;
  color: #000;
  text-decoration: none;
}

.menu li:not(:last-child) a {
  border-right: 1px solid #000;
}

.menu2 {
  display: flex;
}

.menu2 li a {
  display: block;
  padding: 5px 10px;
  color: #000;
  text-decoration: none;
  position: relative;
}

.menu2 li:not(:last-child) a:after {
  content: "";
  width: 1px;
  height: 50%;
  background-color: #000;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}