@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 300;
  src: local('Roboto Light'), local('Roboto-Light'), 
       url(Roboto-Light.ttf) format('truetype'),
       url(Roboto-Light.woff) format('woff'),
       url(roboto-light.woff2) format('woff2');
}
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  src: local('Roboto'), local('Roboto-Regular'), 
       url(Roboto-Regular.ttf) format('truetype'),
       url(Roboto-Regular.woff) format('woff'),
       url(roboto-regular.woff2) format('woff2');
}
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 500;
  src: local('Roboto Medium'), local('Roboto-Medium'), 
       url(Roboto-Medium.ttf) format('truetype'),
       url(Roboto-Medium.woff) format('woff'),
       url(roboto-medium.woff2) format('woff2');
}