.left-line {
  border-right: 10px solid #582560;
  padding-left: 0;
  position: relative;
}

.left-line::before {
  content: "";
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 75px 0 75px 150px;
  border-color: transparent transparent transparent #582560;
  position: absolute;
  top: 15px;
  left: 0;
}