main {
  position: relative;
}
main::before {
  content: "";
  position: absolute;
  top: 15rem;
  left: 0;
  width: 46.25rem;
  height: 35.625rem;
  background-image: url("../../../img/gravures/fond-organique-1.svg");
  background-repeat: no-repeat;
  background-size: contain;
  z-index: -2;
}