diff --git a/docs/components/button/extensions.md b/docs/components/button/extensions.md
new file mode 100644
index 000000000..742fe793c
--- /dev/null
+++ b/docs/components/button/extensions.md
@@ -0,0 +1,30 @@
+# Button >> Extensions ||90
+
+```js script
+import { html } from '@mdjs/mdjs-preview';
+import './extensions/bootstrap-button.mjs';
+```
+
+## Bootstrap button
+
+```js preview-story
+const capitalize = s => s[0].toUpperCase() + s.slice(1);
+
+export const bootstrapButton = () => {
+  const variants = [
+    'primary',
+    'secondary',
+    'success',
+    'danger',
+    'warning',
+    'info',
+    'light',
+    'dark',
+    'link',
+  ];
+
+  return html`<div>
+    ${variants.map(v => html`<bootstrap-button variant="${v}">${capitalize(v)}</bootstrap-button>`)}
+  </div>`;
+};
+```
diff --git a/docs/components/button/extensions/BootstrapButtonTypes.ts b/docs/components/button/extensions/BootstrapButtonTypes.ts
new file mode 100644
index 000000000..117898cd6
--- /dev/null
+++ b/docs/components/button/extensions/BootstrapButtonTypes.ts
@@ -0,0 +1,10 @@
+export type BootstrapButtonVariant =
+  | 'primary'
+  | 'secondary'
+  | 'success'
+  | 'danger'
+  | 'warning'
+  | 'info'
+  | 'light'
+  | 'dark'
+  | 'link';
diff --git a/docs/components/button/extensions/bootstrap-button.mjs b/docs/components/button/extensions/bootstrap-button.mjs
new file mode 100644
index 000000000..536123fe0
--- /dev/null
+++ b/docs/components/button/extensions/bootstrap-button.mjs
@@ -0,0 +1,240 @@
+import { LionButton } from '@lion/ui/button.js';
+import { css } from 'lit';
+
+/**
+ * @typedef {import('./BootstrapButtonTypes.js').BootstrapButtonVariant} BootstrapButtonVariant
+ */
+
+export class BootstrapButton extends LionButton {
+  /** @type {any} */
+  static properties = {
+    variant: { type: String, reflect: true },
+  };
+
+  static styles = [
+    ...super.styles,
+    css`
+      :host {
+        --bs-border-radius: 0.375rem;
+        --bs-border-width: 1px;
+
+        --bs-btn-font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue',
+          'Noto Sans', 'Liberation Sans', Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji',
+          'Segoe UI Symbol', 'Noto Color Emoji';
+        margin: 0.25rem 0.125rem;
+
+        --bs-btn-padding-x: 0.75rem;
+        --bs-btn-padding-y: 0.375rem;
+        --bs-btn-font-size: 1rem;
+        --bs-btn-font-weight: 400;
+        --bs-btn-line-height: 1.5;
+        --bs-btn-color: var(--bs-body-color);
+        --bs-btn-bg: transparent;
+        --bs-btn-border-width: var(--bs-border-width);
+        --bs-btn-border-color: transparent;
+        --bs-btn-border-radius: var(--bs-border-radius);
+        --bs-btn-hover-border-color: transparent;
+        --bs-btn-box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15), 0 1px 1px rgba(0, 0, 0, 0.075);
+        --bs-btn-disabled-opacity: 0.65;
+        --bs-btn-focus-box-shadow: 0 0 0 0.25rem rgba(var(--bs-btn-focus-shadow-rgb), 0.5);
+        display: inline-block;
+        padding: var(--bs-btn-padding-y) var(--bs-btn-padding-x);
+        font-family: var(--bs-btn-font-family);
+        font-size: var(--bs-btn-font-size);
+        font-weight: var(--bs-btn-font-weight);
+        line-height: var(--bs-btn-line-height);
+        color: var(--bs-btn-color);
+        text-align: center;
+        text-decoration: none;
+        vertical-align: middle;
+        cursor: pointer;
+        -webkit-user-select: none;
+        -moz-user-select: none;
+        user-select: none;
+        border: var(--bs-btn-border-width) solid var(--bs-btn-border-color);
+        border-radius: var(--bs-btn-border-radius);
+        background-color: var(--bs-btn-bg);
+        transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out,
+          border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
+        text-transform: none;
+      }
+
+      :host(:not([disabled])) {
+        cursor: pointer;
+      }
+
+      :host(:hover) {
+        color: var(--bs-btn-hover-color);
+        background-color: var(--bs-btn-hover-bg);
+        border-color: var(--bs-btn-hover-border-color);
+      }
+
+      :host(:active),
+      :host([active]) {
+        color: var(--bs-btn-active-color);
+        background-color: var(--bs-btn-active-bg);
+        border-color: var(--bs-btn-active-border-color);
+      }
+
+      :host([variant='primary']) {
+        --bs-btn-color: #fff;
+        --bs-btn-bg: #0d6efd;
+        --bs-btn-border-color: #0d6efd;
+        --bs-btn-hover-color: #fff;
+        --bs-btn-hover-bg: #0b5ed7;
+        --bs-btn-hover-border-color: #0a58ca;
+        --bs-btn-focus-shadow-rgb: 49, 132, 253;
+        --bs-btn-active-color: #fff;
+        --bs-btn-active-bg: #0a58ca;
+        --bs-btn-active-border-color: #0a53be;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #fff;
+        --bs-btn-disabled-bg: #0d6efd;
+        --bs-btn-disabled-border-color: #0d6efd;
+      }
+
+      :host([variant='secondary']) {
+        --bs-btn-color: #fff;
+        --bs-btn-bg: #6c757d;
+        --bs-btn-border-color: #6c757d;
+        --bs-btn-hover-color: #fff;
+        --bs-btn-hover-bg: #5c636a;
+        --bs-btn-hover-border-color: #565e64;
+        --bs-btn-focus-shadow-rgb: 130, 138, 145;
+        --bs-btn-active-color: #fff;
+        --bs-btn-active-bg: #565e64;
+        --bs-btn-active-border-color: #51585e;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #fff;
+        --bs-btn-disabled-bg: #6c757d;
+        --bs-btn-disabled-border-color: #6c757d;
+      }
+
+      :host([variant='success']) {
+        --bs-btn-color: #fff;
+        --bs-btn-bg: #198754;
+        --bs-btn-border-color: #198754;
+        --bs-btn-hover-color: #fff;
+        --bs-btn-hover-bg: #157347;
+        --bs-btn-hover-border-color: #146c43;
+        --bs-btn-focus-shadow-rgb: 60, 153, 110;
+        --bs-btn-active-color: #fff;
+        --bs-btn-active-bg: #146c43;
+        --bs-btn-active-border-color: #13653f;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #fff;
+        --bs-btn-disabled-bg: #198754;
+        --bs-btn-disabled-border-color: #198754;
+      }
+
+      :host([variant='danger']) {
+        --bs-btn-color: #fff;
+        --bs-btn-bg: #dc3545;
+        --bs-btn-border-color: #dc3545;
+        --bs-btn-hover-color: #fff;
+        --bs-btn-hover-bg: #bb2d3b;
+        --bs-btn-hover-border-color: #b02a37;
+        --bs-btn-focus-shadow-rgb: 225, 83, 97;
+        --bs-btn-active-color: #fff;
+        --bs-btn-active-bg: #b02a37;
+        --bs-btn-active-border-color: #a52834;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #fff;
+        --bs-btn-disabled-bg: #dc3545;
+        --bs-btn-disabled-border-color: #dc3545;
+      }
+
+      :host([variant='warning']) {
+        --bs-btn-color: #000;
+        --bs-btn-bg: #ffc107;
+        --bs-btn-border-color: #ffc107;
+        --bs-btn-hover-color: #000;
+        --bs-btn-hover-bg: #ffca2c;
+        --bs-btn-hover-border-color: #ffc720;
+        --bs-btn-focus-shadow-rgb: 217, 164, 6;
+        --bs-btn-active-color: #000;
+        --bs-btn-active-bg: #ffcd39;
+        --bs-btn-active-border-color: #ffc720;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #000;
+        --bs-btn-disabled-bg: #ffc107;
+        --bs-btn-disabled-border-color: #ffc107;
+      }
+
+      :host([variant='info']) {
+        --bs-btn-color: #000;
+        --bs-btn-bg: #0dcaf0;
+        --bs-btn-border-color: #0dcaf0;
+        --bs-btn-hover-color: #000;
+        --bs-btn-hover-bg: #31d2f2;
+        --bs-btn-hover-border-color: #25cff2;
+        --bs-btn-focus-shadow-rgb: 11, 172, 204;
+        --bs-btn-active-color: #000;
+        --bs-btn-active-bg: #3dd5f3;
+        --bs-btn-active-border-color: #25cff2;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #000;
+        --bs-btn-disabled-bg: #0dcaf0;
+        --bs-btn-disabled-border-color: #0dcaf0;
+      }
+
+      :host([variant='light']) {
+        --bs-btn-color: #000;
+        --bs-btn-bg: #f8f9fa;
+        --bs-btn-border-color: #f8f9fa;
+        --bs-btn-hover-color: #000;
+        --bs-btn-hover-bg: #d3d4d5;
+        --bs-btn-hover-border-color: #c6c7c8;
+        --bs-btn-focus-shadow-rgb: 211, 212, 213;
+        --bs-btn-active-color: #000;
+        --bs-btn-active-bg: #c6c7c8;
+        --bs-btn-active-border-color: #babbbc;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #000;
+        --bs-btn-disabled-bg: #f8f9fa;
+        --bs-btn-disabled-border-color: #f8f9fa;
+      }
+
+      :host([variant='dark']) {
+        --bs-btn-color: #fff;
+        --bs-btn-bg: #212529;
+        --bs-btn-border-color: #212529;
+        --bs-btn-hover-color: #fff;
+        --bs-btn-hover-bg: #424649;
+        --bs-btn-hover-border-color: #373b3e;
+        --bs-btn-focus-shadow-rgb: 66, 70, 73;
+        --bs-btn-active-color: #fff;
+        --bs-btn-active-bg: #4d5154;
+        --bs-btn-active-border-color: #373b3e;
+        --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+        --bs-btn-disabled-color: #fff;
+        --bs-btn-disabled-bg: #212529;
+        --bs-btn-disabled-border-color: #212529;
+      }
+
+      :host([variant='link']) {
+        --bs-btn-font-weight: 400;
+        --bs-btn-color: var(--bs-link-color);
+        --bs-btn-bg: transparent;
+        --bs-btn-border-color: transparent;
+        --bs-btn-hover-color: var(--bs-link-hover-color);
+        --bs-btn-hover-border-color: transparent;
+        --bs-btn-active-color: var(--bs-link-hover-color);
+        --bs-btn-active-border-color: transparent;
+        --bs-btn-disabled-color: #6c757d;
+        --bs-btn-disabled-border-color: transparent;
+        --bs-btn-box-shadow: 0 0 0 #000;
+        --bs-btn-focus-shadow-rgb: 49, 132, 253;
+        text-decoration: underline;
+      }
+    `,
+  ];
+
+  constructor() {
+    super();
+
+    /** @type {BootstrapButtonVariant} */
+    this.variant = 'primary';
+  }
+}
+customElements.define('bootstrap-button', BootstrapButton);