html, body {
    background-image: url("images/fondo_azul.png");
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
}

.swal2-container.swal2-backdrop-show, .swal2-container.swal2-noanimation {
    z-index: 11000;
}