<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
</head>
<body>
<div class="accordion-item">
<div class="accordion-button block " type="button">
<a class="overlay" data-bs-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample"></a>
<div class="inner">
<p>This entire box is collapsible.</p>
<p>But somehow the arrow on the right side does not turn</p>
<a href="https://duckduckgo.com/">I'm a clickable link that could also have been a button</a>
</div>
</div>
<div class="collapse" id="collapseExample">
<div class="card card-body">
Exra information about the thing written above.
</div>
</div>
</div>
<div class="accordion" id="accordionExample">
<div class="accordion-item">
<h2 class="accordion-header" id="headingOne">
<button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
<p>This entire box is collapsible.</p>
<p>But somehow the arrow on the right side does not turn</p>
</button>
<a href="https://duckduckgo.com/">I'm a clickable link that could also have been a button</a>
</h2>
<div id="collapseOne" class="accordion-collapse collapse show" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
<div class="accordion-body">
Extra information about the thing written above.
</div>
</div>
</div>
</div>
...