Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.14)
// Compass (v1.0.3)
// ----

@function map-fetch($map, $keys) {
  $key: nth($keys, 1);
  $length: length($keys);
  $value: map-get($map, $key);
  @if ($length > 1) {
    $rest: ();
    @for $i from 2 through $length {
      $rest: append($rest, nth($keys, $i))
    }
    @return map-fetch($value, $rest)
  } @else {
    @return $value;
  }
}
 
$notice-boxes: (
  types: (
    warning: (
      border: yellow,
      background: lighten(yellow, 20)
    ),
    error: (
      border: red,
      background: red
    )
  )
);
 
@each $type in map-keys(map-get($notice-boxes, types)) {
  .notice-box-#{$type} {
    background-color: map-fetch($notice-boxes, types $type background);
    border: map-fetch($notice-boxes, types $type border);
  }
}

SassMeister-output.css

.notice-box-warning {
  background-color: #ffff66;
  border: yellow;
}

.notice-box-error {
  background-color: red;
  border: red;
}