[dgatwood]

Originally Posted by dgatwood

I made my CSS follow those rules. It still gets all the fonts stripped. I tried ensuring that all font styles appear only in the KF8 slice by wrapping them in an @media query. I even tried ripping out every fallback font that wasn't included in the EPUB book.

Moreover, I removed all CSS except for the CSS for the body tag and the CSS for the main body font, and it still failed.

body {
	font-family: "DG Didot", "New Century Schoolbook",
		"Century Schoolbook", "Bookman Old Style", Bookman, Serif;
}

@font-face {
  font-family: 'DG Didot';
  font-style: normal;
  font-weight: normal;
  font-kerning: normal;

  src: url('fonts/DGDidot/DGDidot-Regular.ttf') format('truetype');
}

@font-face {
  font-family: 'DG Didot';
  font-style: normal;
  font-weight: bold;
  font-kerning: normal;

  src: url('fonts/DGDidot/DGDidot-Bold.ttf') format('truetype');
}

@font-face {
  font-family: 'DG Didot';
  font-style: italic;
  font-weight: normal;
  font-kerning: normal;

  src: url('fonts/DGDidot/DGDidot-Italic.ttf') format('truetype');
}

@font-face {
  font-family: 'DG Didot';
  font-style: italic;
  font-weight: bold;
  font-kerning: normal;

  src: url('fonts/DGDidot/DGDidot-BoldItalic.ttf') format('truetype');
}

But bizarrely, removing the fallback fonts:

	font-family: "DG Didot", serif;

seems to have fixed the font stripping problem. However, I tried that before, and it didn't work. The only other significant change I've made since that prior attempt was changing:

  src: url('fonts/DGDidot/DGDidot-BoldItalic.ttf') format('opentype');

(which was technically wrong, but completely tolerated by every reader I tried) to:

  src: url('fonts/DGDidot/DGDidot-BoldItalic.ttf') format('truetype');

Neither change on its own was sufficient.

I'll know in a few minutes if these two fixes plus your four rules are sufficient or just necessary.