webpack-bootstrap-ui-kit/src/scss/_variables.scss

@import "_colors";

$grid-breakpoints: (xs: 0, sm: 576px, md: 768px, lg: 992px, xl: 1200px, xxl: 1390px, xxxl: 1590px) !default;
$container-max-widths: (sm: 540px, md: 720px, lg: 960px, xl: 1140px, xxl: 1330px, xxxl: 1560px) !default;

$font-family-base: "Lato", sans-serif !default;

$grid-gutter-width: 2rem !default;
$grid-gutter-height: 2rem !default;
$grid-gutter-xs-width: $grid-gutter-width / 2 !default;
$grid-gutter-element-height: $grid-gutter-height * 2 !default;

$footer-size: 18.5rem !default;
$footer-bar-size: 2.5rem !default;

/*
 * bootstrap includes
 * keep it at the end
 */

// bootstrap minify bugfix:
$navbar-dark-toggler-icon-bg: none !default;
$navbar-light-toggler-icon-bg: none !default;

// IE > 9
$enable-flex: true !default;

@import "~bootstrap/scss/functions";
@import "~bootstrap/scss/variables";
@import "~bootstrap/scss/mixins";