@font-face {
  font-family: 'Fira Sans';
  src: url('fonts/fira-sans-thin.woff2') format('woff2'),
       url('fonts/fira-sans-thin.woff') format('woff'),
       url('fonts/fira-sans-thin.ttf') format('truetype');
  font-weight: 100;
  font-style: normal;
}