It's very normal. I recently got the 5s myself, and comparing mine with 10+ other iPhone 5s' (friends' + floor models at the Apple retail store) and with other countless 5s users [via this forum], I can definitely confirm that this is 100% normal. I, myself, like it. I didn't at first, but it grew on me. If you don't like it at first, you may grow into it as well.
Enjoy your 5s!