#mainblock::before {
  content: "";
  position: absolute;
  top: -8rem;
  left: 65rem;
  width: 160rem;
  height: 57rem;
  transform: translateX(-50%);
  background-image: url("/images/homepage-background-60.png");
  background-size: cover;
  z-index: -1;
}

 @media (max-width: 1023px) {
  #mainblock {
    background-size: cover;
    background-position: inherit;
  }
  #mainblock::before {
  	left: 55rem;
    width: 160rem;
    height: 66rem;
  }
 }
@media (max-width: 775px) {
  #mainblock::before {
  	left: 28rem;
  }
}
  
  @media (max-width: 559px) {
  #mainblock::before {
  	background-image: none;
  }
  }