@font-face {
  font-family: Open Sans;
  src: url(../font/OpenSans-Regular.ttf) format("truetype");
  font-weight: 400;
}
@font-face {
  font-family: Open Sans;
  src: url(../font/OpenSans-Medium.ttf) format("truetype");
  font-weight: 500;
}
@font-face {
  font-family: Open Sans;
  src: url(../font/OpenSans-Bold.ttf) format("truetype");
  font-weight: 700;
}
@font-face {
  font-family: Open Sans;
  src: url(../font/OpenSans-ExtraBold.ttf) format("truetype");
  font-weight: 800;
}