.deco-banner.ciel-a, .deco-banner.ciel-b, .deco-banner.ciel-c {
  width: 28px;
  height: 28px;
  border-radius: 0;
  background: url('../images/avions.png') no-repeat;
  background-size: 112px 168px;
  image-rendering: pixelated;
}
.deco-banner.ciel-a { background-position: 0 -28px; }
.deco-banner.ciel-b { background-position: -28px -28px; }
.deco-banner.ciel-c { background-position: -84px -28px; }