@media only screen and (max-width: 767px) {
  .section-title {
    font-size: 28px;
    line-height: 40px;
    margin-bottom: 30px;
  }
}

@media only screen and (max-width: 320px) {
  .section-title {
    font-size: 27px;
    line-height: 37px;
  }
}