twbs--bootstrap/scss/bootstrap.scss

// Core variables and mixins
@import "variables";
@import "mixins";

// // Reset and dependencies
@import "normalize";
@import "print";

// Core CSS
@import "reboot";
@import "type";
@import "images";
@import "code";
@import "grid";
@import "tables";
@import "forms";
@import "buttons";

// // Components
@import "animation";
@import "dropdown";
@import "button-group";
@import "input-group";
@import "custom-forms";
@import "nav";
@import "navbar";
@import "card";
@import "breadcrumb";
@import "pagination";
@import "pager";
@import "labels";
@import "jumbotron";
@import "alert";
@import "progress";
@import "media";
@import "list-group";
@import "responsive-embed";
@import "close";

// Components w/ JavaScript
@import "modal";
@import "tooltip";
@import "popover";
@import "carousel";

// Utility classes
@import "utilities";
@import "utilities-spacing";
@import "utilities-responsive";