#bannerimage {
  
  background-image: url(./omastabg.jpg);
  height: 100%;
  background-color: #4273a3;
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
@media (min-width: 320px) {
  #background { height: 20%;}
}

@media (min-width: 768px) {
  #background { height: 80%;  }
}

@media (min-width: 992px) {
  #background { height: 100%; }
}