.imagen-modal{
    width: 90%;
    height: 90%;
    object-fit:contain;
    max-width: max-content;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -webkit-transition: opacity 3s ease;
    transition: opacity .3s ease;
}
#cerrar_modal{
    position: absolute;
    top: 2%;
    right: 1%;
    font-size: 2.5rem;
}