.section11 {
  background-image: url("../img/images/section10-bg.png"),
    url("../img/images/section10-img.png");
  background-repeat: no-repeat, no-repeat;
  background-position: top right, bottom left;
  background-size: 220px auto, 300px auto;
}

@media (min-width: 1024px) {
  .section11 {
    background-size: 450px auto, 700px auto;
  }
}

@media (max-width: 767px) {
  .section11 {
    background-image: none;
  }
}