@media only screen and (max-width: 500px) {
  #home-page #feature {
    background:url(https://northern.virginia.edu/wp-content/uploads/2023/11/CSS-MOBILE-BANNER-CANVAS-CATALOG-2.png);
    background-repeat:no-repeat;
    background-size: cover;
    background-position: center;
    width:100%;
    height:400px;
  }
}
}