message: improve font smoothing for firefox
diff: @@ -50,6 +50,7 @@ body {
  text-size-adjust: none;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  + -moz-osx-font-smoothing: grayscale;
  }
  html,
  @@ -161,10 +162,12 @@ blockquote a {
  blockquote > *:first-child {
  margin-top: 0;
  + padding-top: 0;
  }
  blockquote > *:last-child {
  margin-bottom: 0;
  + padding-bottom: 0;
  }
  blockquote code {
  