.works-images {
  margin: 0 0 20px; }

.works-introduction:not(:last-of-type) {
  margin: 0 0 20px; }

.works-section {
  margin: 40px 0 30px;
}

.works-section-box:not(:last-of-type) {
  margin: 0 0 20px; }

@media only screen and (min-width: 768px) {
  .works-images {
    width: 80%;
    margin: 0 auto; }
  .works-introduction:not(:last-of-type) {
    margin: 0 0 30px; }
  .works-section {
    margin: 60px 0 50px; 
  }
  .works-section-box:not(:last-of-type) {
    margin: 0 0 30px; } }