Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v0.7.0)
// ----

$ms-ratio1: 1.250; //major-third
$ms-ratio2: 1.5; //fifth
$base-size: 16px;

$ms-down1: round($base-size / $ms-ratio1);
$ms-down2: round($ms-down1 / $ms-ratio1);
$ms-down3: round($ms-down2 / $ms-ratio1);
$ms-up1: round($base-size * $ms-ratio1);
$ms-up2: round($ms-up1 * $ms-ratio1);
$ms-up3: round($ms-up2 * $ms-ratio1);
$ms-up4: round($ms-up3 * $ms-ratio1);
$ms-up5: round($ms-up4 * $ms-ratio1);
$ms-up6: round($ms-up5 * $ms-ratio1);

div {
  font-size: $ms-down3;
  font-size: $ms-down2;
  font-size: $ms-down1;
  font-size: $base-size;
  font-size: $ms-up1;
  font-size: $ms-up2;
  font-size: $ms-up3;
  font-size: $ms-up4;
  font-size: $ms-up5;
  font-size: $ms-up6;
}

SassMeister-output.css

div {
  font-size: 8px;
  font-size: 10px;
  font-size: 13px;
  font-size: 16px;
  font-size: 20px;
  font-size: 25px;
  font-size: 31px;
  font-size: 39px;
  font-size: 49px;
  font-size: 61px; }