[JSWolf]

Originally Posted by Hitch

In ePUB3, or ePUB2?

Hitch

Here are the media queries that validated in both ePub 2 and ePub 3. I converted the ePub 3 eBook to ePub 2 and it validates no problem. Maybe you last did it with an older epubscheck.

@media amzn-kf8 {
  div.body {
    margin: 0 0 0 0;
  }
  body {
    margin: 0 1.2em 0 1.2em;
  }
  img.epub {
    display: none;
  }
  img.sign-up {
    width: 3.5em;
    display: inline;
  }
  img.fb {
    width: 1em;
    display: inline;
  }
}
@media amzn-mobi {
  div.body {
    margin: 0 0 0 0;
  }
  body {
    margin: 0 1.2em 0 1.2em;
  }
  img.epub {
    display: none;
  }
  img.sign-up {
    width: 3.5em;
    display: inline;
  }
  img.fb {
    width: 1em;
    display: inline;
  }
  sup {
    vertical-align: super;
    font-size: 0.65em;
  }
  sub {
    vertical-align: sub;
    font-size: 0.65em;
  }
}