@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 300;
  font-display: fallback;
  src: url(OpenSans-300.ttf) format('truetype');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 400;
  font-display: fallback;
  src: url(OpenSans-400.ttf) format('truetype');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 600;
  font-display: fallback;
  src: url(OpenSans-600.ttf) format('truetype');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 700;
  font-display: fallback;
  src: url(OpenSans-700.ttf) format('truetype');
}