Answer:
Fashions change, but what can a person wear that is never out of style?
I have a gown but I'm not a priest; I have a crown but I'm not a king.
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I run around the city but I never move.
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down but should not be forgotten.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.