.custom-image-container img{
  width: 100%;
  height: auto;
}
.custom-image-container a{
  display: block;
  line-height: 0;
}
.custom-image-container .mobile{
  display: none;
}
@media screen and (max-width:600px){
  .custom-image-container .mobile{
      display: block;
  }
  .custom-image-container .desktop{
      display: none;
   }
}