/*

  SYSTEM FONTS

*/
.sans-serif { font-family: -apple-system, 'avenir next', avenir, roboto, noto, 'helvetica neue', helvetica, ubuntu, 'franklin gothic medium', 'century gothic', sans-serif; }
/*
  Reference:

  https://webkit.org/blog/3709/using-the-system-font-in-web-content/
  https://en.wikipedia.org/wiki/Avenir_(typeface)
  https://www.google.com/design/spec/style/typography.html#typography-typeface

*/