Código CSS

/*====================== About Us =====================*/
.about-us{
  background-image: url(../images/about_us.jpg);
  background-repeat: no-repeat;
  background-position: bottom center;
  display: grid;
  grid-template-rows: repeat(2, 1fr);
}

@media only screen and (min-width:768px){
  .about-us{
    grid-template-columns: repeat(3, 1fr);
  }
}
.content-about-us{
  background-color: var(--white-platinium);
  padding: 4rem;
}

@media only screen and (min-width:768px){
  .content-about-us{
    grid-column: 2 / 4;
    grid-row: 1 / -1;
  }
}