.headline-underline {
  position: relative;
  margin-bottom: 1em;
  display: flex;
  justify-content: center;
  font-size: 30px;
  font-weight:bold;
  color: #333;
    }
.headline-underline:before {
  content: '';
  position: absolute;
  bottom: -10px;
  display: inline-block;
  width: 100px;
  height: 4px;
  left: 50%;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
  background-color: #437bb7;
  border-radius: 3px;
}