Hi there,
you can add this CSS:
@media(max-width: 768px) {
.snp-pop-inline {
display: none;
}
}
I noticed on your site that you have this in your Child Theme Style sheet:
add_action( 'wp_enqueue_scripts', function() {
wp_dequeue_style( 'generate-child' );
}, 50 );
That should go in your child theme functions.php NOT the style sheet.