@mixin font($path, $family, $weight: normal, $style: normal, $range...) {
  @font-face {
    font: {
      display: fallback;
      family: $family;
      weight: $weight;
      style: $style;
    }
    @if length($range) > 0 {
      unicode-range: $range;
    }
    src: url($path);
  }
}

@include font("fonts/cmunrm.woff2", "CMU Serif", normal, normal, U+0-10FFFF);
@include font("fonts/-cmunrm.woff2", "CMU Serif", normal, normal, U+20-7E,U+A0-FF,U+17F,U+200-2FF,U+627,U+62F,U+644,U+646,U+649,U+2010-201F,U+2122,U+1F4D6);
@include font("fonts/cmunti.woff2", "CMU Serif", normal, italic, U+0-10FFFF);
@include font("fonts/-cmunti.woff2", "CMU Serif", normal, italic, U+20-7E,U+A0-FF,U+17F,U+200-2FF,U+627,U+62F,U+644,U+646,U+649,U+2010-201F,U+2122,U+1F4D6);
@include font("fonts/cmunbx.woff2", "CMU Serif", bold, normal, U+0-10FFFF);
@include font("fonts/-cmunbx.woff2", "CMU Serif", bold, normal, U+20-7E,U+A0-FF,U+17F,U+200-2FF,U+627,U+62F,U+644,U+646,U+649,U+2010-201F,U+2122,U+1F4D6);
@include font("fonts/cmunbi.woff2", "CMU Serif", bold, italic, U+0-10FFFF);
@include font("fonts/-cmunbi.woff2", "CMU Serif", bold, italic, U+20-7E,U+A0-FF,U+17F,U+200-2FF,U+627,U+62F,U+644,U+646,U+649,U+2010-201F,U+2122,U+1F4D6);
@include font("fonts/cmuntt.woff2", "CMU Typewriter Text", normal, normal, U+0-10FFFF);
@include font("fonts/-cmuntt.woff2", "CMU Typewriter Text", normal, normal, U+20-7E,U+A0-FF,U+17F,U+200-2FF,U+627,U+62F,U+644,U+646,U+649,U+2010-201F,U+2122,U+1F4D6);