Catechism of the Catholic Church §1207 — excerpt
It is fitting that liturgical celebration tends to express itself in the culture of the people where the Church finds herself, though without being submissive to it.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.