.fancy-box::before {
  content: '';
  z-index: -3;
  display: block;
  position: absolute;
  height: 275px;
  width: 90%;
  top: calc(-10px + var(--parallax-y, 0px)); /* Add the parallax effect using the custom property */
  left: -5px;
	box-shadow: -2px var(--parallax-shadow, 2px) 5px rgba(0,0,0,0.5);
  background-color: var(--wp--preset--color--primary);
}
@media screen and (max-width: 750px){
	.fancy-box::before{
		left:0px
	}
}