.custom-separator {
  height: 144px;
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  z-index: 2;
}

.custom-separator--no-top-margin {
  margin-top: 0;
}

@media (min-width: 768px) {
  .custom-separator--no-top-margin {
    margin-top: -144px;
  }
}