All Bootstrap 4 CSS classes

.alert-danger .alert-dark .alert-dismissible .alert-heading .alert-info .alert-light .alert-link .alert-primary .alert-secondary .alert-success .alert-warning

.badge .badge-danger .badge-dark .badge-info .badge-light .badge-pill .badge-primary .badge-secondary .badge-success .badge-warning

.border .border-*-0 .border-danger .border-dark .border-info .border-light .border-primary .border-secondary .border-success .border-warning .border-white .rounded .rounded-* .rounded-0 .rounded-circle

.breadcrumb

.btn-group .btn-group (nested) .btn-group-lg .btn-group-sm .btn-group-vertical .btn-toolbar

.active button .btn-block .btn-lg .btn-sm .checkbox as button .disabled button .radio as button

.btn-danger .btn-dark .btn-info .btn-light .btn-link .btn-outline-danger .btn-outline-dark .btn-outline-info .btn-outline-light .btn-outline-primary .btn-outline-secondary .btn-outline-success .btn-outline-warning .btn-primary .btn-secondary .btn-success .btn-warning

.card .card bg-... text-... .card-body .card-columns .card-deck .card-footer .card-group .card-header .card-img-bottom .card-img-overlay .card-img-top .card-link .card-subtitle .card-text .card-title .h*.card-header .list-group .middle image

.carousel slide .carousel-caption .carousel-fade .carousel-indicators

.accordion .collapse

.bg-danger .bg-dark .bg-info .bg-light .bg-primary .bg-secondary .bg-success .bg-warning .bg-white .text-danger .text-dark .text-info .text-light .text-primary .text-secondary .text-success .text-warning .text-white

.custom-checkbox .custom-file .custom-radio .custom-range .custom-select .custom-switch

.d-*-block .d-*-flex .d-*-inline .d-*-inline-block .d-*-inline-flex .d-*-none .d-*-table .d-*-table-cell .d-print-...

.dropdown .dropdown (split) .dropdown-divider .dropdown-header .dropdown-item disabled .dropdown-item-text .dropdown-menu-right .dropleft .dropright .dropup .dropup (split)

.align-content-*-around .align-content-*-center .align-content-*-end .align-content-*-start .align-content-*-stretch .align-items-*-baseline .align-items-*-center .align-items-*-end .align-items-*-start .align-items-*-stretch .align-self-*-baseline .align-self-*-center .align-self-*-end .align-self-*-start .align-self-*-stretch .flex-*-column .flex-*-column-reverse .flex-*-grow-0 .flex-*-grow-1 .flex-*-nowrap .flex-*-row .flex-*-row-reverse .flex-*-shrink-0 .flex-*-shrink-1 .flex-*-wrap .flex-*-wrap-reverse .flex-fill .justify-content-*-around .justify-content-*-between .justify-content-*-center .justify-content-*-end .justify-content-*-start .order-*-#

.checkbox .dropdown .input-group .input-group-append .input-group-lg .input-group-prepend .input-group-sm .radio .segmented buttons

form (full example) .disabled items .form using the grid .form-check .form-check-inline .form-control .form-control-file .form-control-lg .form-control-plaintext .form-control-range .form-control-sm .form-group .form-inline .readonly

.col .col-* .col-# (<576px) .col-lg-# (≥992px) .col-md-# (≥768px) .col-sm-# (≥576px) .col-xl-# (≥1200px) .container .container-fluid .nested columns .no-gutters .offset-*-# .order-# .row

.img-fluid .img-thumbnail

.jumbotron .jumbotron-fluid

.list-group .list-group with badges .list-group with d-flex .list-group-item active .list-group-item disabled .list-group-item-action .list-group-item-danger .list-group-item-dark .list-group-item-info .list-group-item-light .list-group-item-primary .list-group-item-secondary .list-group-item-success .list-group-item-warning

.d-flex align-self-center .d-flex align-self-end .d-flex align-self-start .media .nested media .right aligned media

.close .embed-responsive .invisible .shadow .shadow-lg .shadow-none .shadow-sm .sr-only .sr-only-focusable .visible

.modal .modal fade .modal-dialog-centered .modal-lg .modal-sm .modal-xl

.collapse navbar-collapse .navbar .navbar fixed-bottom .navbar fixed-top .navbar sticky-top .navbar with form .navbar-brand .navbar-dark bg-dark .navbar-expand-* .navbar-light .navbar-text .navbar-toggler

.nav flex-column .nav justify-content-* .nav with flex utils .nav-fill .nav-justified .nav-pills .nav-pills with dropdown .nav-tabs .nav-tabs with dropdown .nav.nav .ul.nav

.page-item active .page-item disabled .pagination .pagination-lg .pagination-sm

.dismissible popover .popovers

.align-* .clearfix .fixed-bottom .fixed-top .float-*-left .float-*-none .float-*-right .sticky-top

.multiple progress-bar .progress .progress-bar .progress-bar bg-* .progress-bar with height .progress-bar with label .progress-bar-animated .progress-bar-striped .progress-bar-striped bg-*

.data-spy

.h-100 .mh-100 .mw-100 .w-100

.m-1 / m-*-# .m-n1 / m-*-n# .mb-1 / mb-*-# .ml-1 / ml-*-# .mr-1 / mr-*-# .mt-1 / mt-*-# .mx-1 / mx-*-# .my-1 / my-*-# .p-1 / p-*-# .pb-1 / pb-*-# .pl-1 / pl-*-# .pr-1 / pr-*-# .pt-1 / pt-*-# .px-1 / px-*-# .py-1 / py-*-#

.spinner-border .spinner-border text-* .spinner-border-sm .spinner-grow .spinner-grow text-* .spinner-grow-sm

.table .table-*-responsive .table-active .table-bordered .table-borderless .table-danger .table-dark .table-hover .table-info .table-light .table-primary .table-reflow .table-secondary .table-sm .table-striped .table-success .table-warning .thead-dark .thead-light

.font-italic .font-weight-bold .font-weight-bolder .font-weight-light .font-weight-lighter .font-weight-normal .text-*-center .text-*-left .text-*-right .text-black-50 .text-body .text-capitalize .text-decoration-none .text-hide .text-justify .text-lowercase .text-monospace .text-muted .text-nowrap .text-truncate .text-uppercase .text-white-50

.toast

.tooltip

.blockquote .blockquote-footer .blockquote-reverse .display-# (1-4) .dl-horizontal .lead .list-inline .list-unstyled