img {
  display: block;
  margin-right: auto;
  margin-left: auto;
}

.asvr {
  position: absolute;
  left: 0;
  right: 0;
  margin-left: auto;
  margin-right: auto;
  /*width: 100px;*/
}

@media (min-width: 992px) {
  .last-section {
    height: 300px;
  }
}