Test of alternate declaration for base values

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.5)
// Compass (v1.0.0.alpha.18)
// ----

$base-data: (
  'font-size': 16px,
  'line-height': 1.5,
  'margin-x': 1rem,
  'margin-y': 1rem,
  'viewport-margin-x': 1rem,
  'viewport-margin-y': 1rem,
  'column-count': 1
);

$base-data: map-merge($base-data, (
  'html-scale': map-get($base-data, font-size) / 16px
));

.test {
  out: map-get($base-data, html-scale);
}

SassMeister-output.css

.test {
  out: 1;
}