.circle {
  background: url(images/generated/sprites/duplicate.png) -48px 0 no-repeat;
}

.circle.blue {
  background: url(images/generated/sprites/duplicate.png) no-repeat;
}

@media screen and (min-width: 300px) {
  .circle {
    background: url(images/generated/sprites/duplicate.png) no-repeat;
  }
}