.sponge-section {
  background-color: var(--theme-light);
}

.structure-section {
  background-color: var(--light-grey-section);
  z-index: 0;
}
@media screen and (min-width: 769px) {
  .power-plant-section:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 35%;
    width: 100%;
    background-color: var(--theme-light);
    z-index: -1;
  }
  .induction-section:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 50%;
    width: 100%;
    background-color: var(--light-grey-section);
    z-index: -1;
  }
  .structure-section:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 5%;
    width: 100%;
    background-color: var(--white);
    z-index: -1;
  }
}