css font import example

us_font.css

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 100;
  src: local('Roboto Thin'), local('Roboto-Thin'), 
  url(fonts/Roboto-Thin.ttf) format('truetype');
}
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 300;
  src: local('Roboto Light'), local('Roboto-Light'), 
  url(fonts/Roboto-Light.ttf) format('truetype');
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  src: local('Roboto Regular'), local('Roboto-Regular'), 
  url(fonts/Roboto-Regular.ttf) format('truetype');
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 500;
  src: local('Roboto Medium'), local('Roboto-Medium'), 
  url(fonts/Roboto/Roboto-Medium.ttf) format('truetype');
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 900;
  src: local('Roboto Black'), local('Roboto-Black'), 
  url(fonts/Roboto-Black.ttf) format('truetype');
}