/* for Desktop */
.custom-bg {
  background-image: url("../images/bao tri.jpg");
  background-repeat: none;
}

/* for mobile */
@media only screen and (max-width: 1023px) {
  .custom-bg {
    background-image: url("../images/bao tri_mobile.jpg");
    background-repeat: none;
    background-size: cover;
    background-position: center;
  }
}