#backbg_login{
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  height: 100vh;
  background: url(../../vistas/img/plantilla/fondo1.jpg);
  background-size: cover;
  overflow: hidden;
  z-index: -1; /*Indica que esta atras del todo */ 
}

.swal2-popup {
  font-size: 1.6rem !important;
}