/* Se elimina el efecto "fade" en las ventanas modal */
.modal.fade .modal-dialog {
  -webkit-transform: translate(0, -0%);
  -ms-transform: translate(0, -0%);
  transform: translate(0, -0%);
  -webkit-transition: -webkit-transform 0.3s ease-out;
  -moz-transition: -moz-transform 0.3s ease-out;
  -o-transition: -o-transform 0.3s ease-out;
  transition: transform 0.3s ease-out;
}

/* dialogo centrado verticalmente */
.login-dialog .modal-dialog {
    height: 300px;
    top: 50%;
    margin-top: -150px;
}

.login-dialog .modal-dialog .modal-header {
  background-color: #4d6fd1;
}