@media only screen and (max-width:768px) {
  .modal-fs{
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
  }
  .modal-fs .modal-content{
    height: auto;
    min-height: 100%;
    border-radius: 0;
  }
}
@media only screen and (min-width:980px){
  .modal-custom-lg{
    max-width: 850px;
  }
}