Bagaimanakah Saya Boleh Mencipta Anak Panah Antara Halaman Aktif dalam Wizard CSS Sahaja Menggunakan Elemen Pseudo Sahaja?

#flowBoxes div {
  display: inline-block;
  position: relative;
  height: 25px;
  line-height: 25px;
  padding: 0 20px;
  border: 1px solid #ccc;
  margin-right: 2px;
}

#flowBoxes div.right:after {
  content: '';
  border-top: 1px solid #ccc;
  border-right: 1px solid #ccc;
  width: 18px;
  height: 18px;
  position: absolute;
  right: 0;
  top: -1px;
  background-color: white;
  z-index: 150;
  transform: translate(10px, 4px) rotate(45deg);
}

#flowBoxes div.left:before {
  content: '';
  border-top: 1px solid #ccc;
  border-right: 1px solid #ccc;
  width: 18px;
  height: 18px;
  position: absolute;
  left: 0;
  top: -1px;
  background-color: white;
  z-index: 50;
  transform: translate(-10px, 4px) rotate(45deg);
}

.active {
  background-color: green;
  color: white;
}

.active:after {
  background-color: green;
}