My bourbon base override

_base.scss

@import "normalize";
@import "bourbon/bourbon";
@import "neat/neat";

$margin-small: 10px;
$margin: $margin-small * 2;
$span: 45px;

$font-size: 15px;

$color-text: #666666;
$color-link: rgb(243, 121, 52);
$color-header: #37b89a;
$color-emphasis: rgb(170, 170, 170);
$color-background: #f4faed;
$color-shadow: rgba(20, 20, 20, 0.6);
$color-border: darken(desaturate($color-background, 20%), 10%);
$border-width: 1px;


// Bitters configuration:

$mobile: new-breakpoint(max-width 40em 4);

$base-border-color: $color-border;
$base-border: $border-width solid $base-border-color;

$base-background-color: #fff;
$base-font-size: 1em;
$action-color: $color-link;
$base-font-color: $color-text;
$base-font-family: "Nunito", "Helvetica Neue", Arial, Helvetica, sans-serif !default;
$heading-font-family: $base-font-family;

$form-box-shadow: inset 0 1px 3px rgba(#000, 0.06);
$form-box-shadow-focus: $form-box-shadow, 0 0 5px adjust-color($action-color, $lightness: -5%, $alpha: -0.3);

$base-line-height: 1.5;
$heading-line-height: 1.2;
$base-border-radius: 3px;
$base-spacing: $base-line-height * 1em;
$small-spacing: $base-spacing / 2;
$base-z-index: 0;
$base-duration: 150ms;
$base-timing: ease;

@import "bitters/typography";

Makefile

all: scss

CSS_OUT = ../static/css/screen.css
SCSS_LIBS = ./lib/

$(CSS_OUT): **.scss $(SCSS_LIBS)
	sassc --style nested $(addprefix -I ,$(SCSS_LIBS)) screen.scss $(CSS_OUT)

scss: $(CSS_OUT)