.custom-heading {
  display: inline-block;
  font-size: 18px;
  color: #0f2f3a;
  position: relative;
}

.custom-heading .heading-line {
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 40px;
  height: 3px;
  background: #0f2f3a;
}