.pt-100 {padding-top: 100px;}

.has-little-line h1:after {
  background-color: #fff;
  content: "";
  display: -ms-flexbox;
    display: flex;
  height: 1px;
  width: 2rem;
    -ms-flex-pack: center;
    justify-content: center;
    margin-left: calc(50% - 1.5rem);
    margin-top: 1.5rem;
}