css class names gets localized

It sounds weird, but i discovered that some css class named have localized names:

<div class=”entry-meta”> <span class=”sep”>Опубликовано </span><time class=”дата” datetime=”2015-08-12T18:08:02+00:00″ pubdate=””>Август 12, 2015</time><span class=”автор”> <span class=”sep”> автор </span> <span class=”vcard автора”>akashihi</span></span> <span class=”sep sep-comment”> — </span> <span class=”comments-link”> Нет комментариев ↓ </span></div>

As you may see, i’m running russian localization and <span class=”author”> in unexpectedly became <span class=”автор”>

What i’m doing wrong?