@font-face {
  font-family: 'Fira Sans';
  src: url('firasans-light-webfont.woff') format('woff2'),
       url('firasans-light-webfont.woff') format('woff');
  font-weight: 300;
  font-style: normal;
}

@font-face {
  font-family: 'Fira Sans';
  src: url('firasans-lightitalic-webfont.woff') format('woff2'),
       url('firasans-lightitalic-webfont.woff') format('woff');
  font-weight: 300;
  font-style: italic;
}

@font-face {
  font-family: 'Fira Sans';
  src: url('firasans-heavy-webfont.woff') format('woff2'),
       url('firasans-heavy-webfont.woff') format('woff');
  font-weight: 900;
  font-style: normal;
}

@font-face {
  font-family: 'Fira Sans';
  src: url('firasans-heavyitalic-webfont.woff') format('woff2'),
       url('firasans-heavyitalic-webfont.woff') format('woff');
  font-weight: 900;
  font-style: italic;
}