.related-products {
  display: block;
}

.related-products__heading {
  margin: 0 0 32px;
  text-align: center;
  font-size: 24px;
  letter-spacing: 0.07em;
}
@media screen and (min-width:990px) { 
  .related-products__heading {
  margin: 0 0 40px;
  font-size: 32px;
}
}