.hero .hero-media {
    /* Été */
 /*background-image:url(//s3.amazonaws.com/imagescloud/images/ct/amc/20220714-m.jpg); */
  /* Hiver */
  background-image:url(//s3.amazonaws.com/imagescloud/images/backgrounds/hiver/amc-m.jpg);
}

@media only screen and (min-width: 768px) {
  .hero .hero-media {
    /* Été */
    /*background-image:url(//s3.amazonaws.com/imagescloud/images/ct/amc/20220714.jpg); */
  /* Hiver */
 background-image:url(//s3.amazonaws.com/imagescloud/images/backgrounds/hiver/amc.jpg);
  }
}