def METHOD_NAME(self):
    """Verify that there is no firefox button visible at header in the firefox landing page"""
    p = ProductFactory(slug="firefox")
    url = reverse("products.product", args=[p.slug])
    r = self.client.get(url, follow=True)
    self.assertEqual(200, r.status_code)
    doc = pq(r.content)
    self.assertEqual(1, doc(".firefox-download-button.hidden").length)