@font-face {
  font-family: 'Source Serif Pro';
  src: url('sourceserifpro.woff2') format('woff2'),
       url('sourceserifpro.woff') format('woff'),
       url('sourceserifpro.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Source Serif Pro';
  src:  url('sourceserifproitalic.woff2') format('woff2'),
        url('sourceserifproitalic.woff') format('woff'),
        url('sourceserifproitalic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
}

@font-face {
  font-family: 'Source Serif Pro';
  src: url('sourceserifprobold.woff2') format('woff2'),
       url('sourceserifprobold.woff') format('woff'),
       url('sourceserifprobold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Source Serif Pro';
  src:  url('sourceserifprobolditalic.woff2') format('woff2'),
        url('sourceserifprobolditalic.woff') format('woff'),
        url('sourceserifprobolditalic.ttf') format('truetype');
  font-weight: 700;
  font-style: italic;
}