Famo.us Change Font

Using the compiled library from https://github.com/jperl/famous-compiled

HTML

<link rel="stylesheet" href="https://rawgit.com/jperl/famous-compiled/e9c12b1fa657820d3f9bad093ea72e8ee2dfec46/dist/lib/famous/core/famous.css">
<script src="http://rawgit.com/jperl/famous-compiled/e9c12b1fa657820d3f9bad093ea72e8ee2dfec46/dist/src/4f231991.polyfills.js"></script>
<script src="https://rawgit.com/jperl/famous-compiled/97f85aaa64af255adfe0407c941e0e859b0759bc/dist/src/804b0adb.main.js"></script>
<p class="weight300">Lorem Ipsum Dolor (300, normal)</p>
<p class="weight400">Lorem Ipsum Dolor (400, normal)</p>
<p class="weight600">Lorem Ipsum Dolor (600, normal)</p>

SCSS

@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 300;
  src: local('Open Sans Light'), local('OpenSans-Light'), url(http://fonts.gstatic.com/s/opensans/v13/DXI1ORHCpsQm3Vp6mXoaTeY5mlVXtdNkpsMpKkrDXP4.woff) format('woff');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 400;
  src: local('Open Sans'), local('OpenSans'), url(http://fonts.gstatic.com/s/opensans/v13/u-WUoqrET9fUeobQW7jkRbO3LdcAZYWl9Si6vvxL-qU.woff) format('woff');
}
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 600;
  src: local('Open Sans Semibold'), local('OpenSans-Semibold'), url(http://fonts.gstatic.com/s/opensans/v13/MTP_ySUJH_bn48VBG8sNSuY5mlVXtdNkpsMpKkrDXP4.woff) format('woff');
}

p {
    font-family: 'Open Sans';
    
    &.weight300 { font-weight: 300 }
    &.weight400 { font-weight: 400 }
    &.weight600 { font-weight: 600 }
}