I don't know why bootstrap icons doesn't work in ReactJS.

[Here is my buttons](https://i.stack.imgur.com/CPuSp.png)

My post items code:

import React from 'react';

```
const PostListItem = () => {
    return (
        <li className="app-list-item d-flex justify-content-between">
            <span className="app-list-item-label">
                Hello World!!
            </span>
            <div className="d-flex justify-content-center align-items-center">
                <button className="btn-star btn-sm">
                    <i className="f fa-star"></i>
                </button>
                <button className="btn-trash btn-sm">
                    <i className="f fa-trash-o"></i>
                </button>
                <i className="f fa-trash-heart"></i>

            </div>
        </li>
    );
};

export default PostListItem;

```

My index.hmtl where put a link to <https://www.bootstrapcdn.com/> and <https://www.bootstrapcdn.com/fontawesome/>

```
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.15.3/css/fontawesome.min.css">
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <title>React App</title>
  </head>
  <body>
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
  </body>
</html>

```