docs: add default sticky banner example to StoryBook (themesberg#980)

src/components/Banner/Banner.stories.tsx

@@ -0,0 +1,38 @@
+import type { Meta, StoryFn } from '@storybook/react';
+import { HiX } from 'react-icons/hi';
+import { MdAnnouncement } from 'react-icons/md';
+import type { BannerComponentProps } from './Banner';
+import { Banner } from './Banner';
+
+export default {
+  title: 'Components/Banner',
+  component: Banner,
+} as Meta;
+
+const Template: StoryFn<BannerComponentProps> = (args) => <Banner {...args} />;
+
+export const DefaultBanner = Template.bind({});
+DefaultBanner.storyName = 'Default';
+DefaultBanner.args = {
+  children: (
+    <div className="fixed left-0 top-0 z-50 flex w-full justify-between border-b border-gray-200 bg-gray-50 p-4 dark:border-gray-600 dark:bg-gray-700">
+      <div className="mx-auto flex items-center">
+        <p className="flex items-center text-sm font-normal text-gray-500 dark:text-gray-400">
+          <MdAnnouncement />
+          <span>
+            New brand identity has been launched for the{' '}
+            <a
+              href="https://flowbite.com"
+              className="decoration-600 dark:decoration-500 inline font-medium text-cyan-600 underline decoration-solid underline-offset-2 hover:no-underline dark:text-cyan-500"
+            >
+              Flowbite Library
+            </a>
+          </span>
+        </p>
+      </div>
+      <Banner.CollapseButton color="gray" className="border-0 bg-transparent px-0">
+        <HiX className="h-4 w-4" />
+      </Banner.CollapseButton>
+    </div>
+  ),
+};