mdb-ui-kit/scss/includes/_bootstrap-material-design.scss

// This is the main scss file, provided as an underscored file so that variable contexts remain in-tact when importing from the source.
@import 'variables';

// FIXME: V4 SCSS inclusion via an underscored file https://github.com/twbs/bootstrap/issues/18350
@import 'bootstrap';

@import 'mixins';

@import 'reboot';
@import 'buttons';
@import 'checkboxes';
@import 'togglebutton';
@import 'radios';
@import 'inputs';
@import 'form';
@import 'lists';
@import 'navbar';
@import 'alerts';
@import 'progress';
@import 'type';
@import 'tabs';
@import 'popups';
@import 'cards';
@import 'dialogs';
@import 'dividers';
@import 'themes';

@import 'plugins';