#hero-slider {
    position: relative;
    width: 100%;
    height: 500px; /* cambia altezza */
    overflow: hidden;
    margin: 0px;
    max-width: 100%!important;
  }
  
  #hero-slider img {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
  }
  
  #hero-slider img.active {
    opacity: 1;
    z-index: 2;
  }