Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

@import "sass-maps-plus";

$general-spacing: (
  vertical: (
    floor: 0,
    median: 6px,
    ceil: 12px
  ),
  horizontal: (
    floor: 2px,
    median: 12px,
    ceil: 12px
  ),
  margin: (
    floor: 0,
    median: 10px,
    ceil: 20px
  )
) !default;


// Map-merge
$update-spacing-map: (
  margin: (
    median: 50px
  )
);

$general-spacing: map-merge-z($general-spacing, $update-spacing-map);


// or
$general-spacing: map-merge-z($general-spacing, (vertical: (median: 20px)));

block {
  margin: map-get-z($general-spacing, margin, median);
  padding: map-get-z($general-spacing, vertical, median);
}

SassMeister-output.css

block {
  margin: 50px;
  padding: 20px;
}