When I inspect a web page (even stackoverflow), I always see
<style type="text/css">/* This is not a zero-length file! */</style>
<style type="text/css">/* This is not a zero-length file! */</style>
(yes, twice) at the bottom of the <head>
tag.
Google gives no answer about that...
Does it come from Chrome? What's the point?
Edit
Thanks the others for the answer. This code was generated by the Instant Translate Chrome extension.