Bootstrap 4 spacer variables with sizes 'half' and '4' included.

about.md

Spacer functions for Bootstrap 4 α3

The spacer functions include these measurements:

• 0.5 => m-*-h
• 1 => m-*-1
• 1.5 => m-*-1h
• 2 => m-*-2
• 3 => m-*-3
• 4 => m-*-4
• 5 => m-*-5

bootstrap-4-spacer-half.scss

// Spacer
//
// Control the default styling of most Bootstrap elements by modifying these
// variables. Mostly focused on spacing.

$spacer:                     1rem !default;
$spacer-x:                   $spacer !default;
$spacer-y:                   $spacer !default;
$spacers: (
  0: (
    x:   0,
    y:   0
  ),
  h: (
    x:   ($spacer-x * 0.5),
    y:   ($spacer-y * 0.5)
  ),
  1: (
    x:   $spacer-x,
    y:   $spacer-y
  ),
  1h: (
    x:   ($spacer-x * 1.5),
    y:   ($spacer-y * 1.5)
  ),
  2: (
    x:   ($spacer-x * 2),
    y:   ($spacer-y * 2)
  ),
  3: (
    x:   ($spacer-x * 3),
    y:   ($spacer-y * 3)
  ),
  4: (
    x:   ($spacer-x * 4),
    y:   ($spacer-y * 4)
  ),
  5: (
    x:   ($spacer-x * 5),
    y:   ($spacer-y * 5)
  ),
) !default;
$border-width:               thin !default;