I am attempting to utilize Bootstrap to showcase media content (linked here: https://getbootstrap.com/docs/4.0/layout/media-object/). However, despite copying and pasting the code from the documentation, the output does not match the example on the website. Additionally, the external CSS file bootstrap_part.css appears to be empty.
!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="bootstrap_part.css">
<link rel="stylesheet" href="https://toert.github.io/Isolated-Bootstrap/versions/4.0.0-beta/iso_bootstrap4.0.0min.css">
<title>Harli Lacej - Website</title>
<link rel="icon" href="../personal-website/img/H.png" type="image/png">
</head>
<body>
<main>
<img src="./img/profile_photo.png" alt="profile_photo" height="150px" width="150px">
<br>
<br>
<div class="bootstrap">
<div class="media">
<img class="mr-3" src="img/img_asd.jpg" alt="Generic placeholder image" width="60">
<div class="media-body">
<h5 class="mt-0">Media heading</h5>
Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
</div>
</div>
</div>
...