JSFiddle - React, Tailwind, and code Playground

HTML

<!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">
    <title>Document</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</head>
<body>
    

<container>
<br>
<center>
<p>
Button #1 should open both Accordion #1 and accordion #1 sub item #1
</p>
<button data-bs-toggle="collapse" href="#sub-collapseOne">Button #1</button>
<br>
<br>
<br>
<p>
Button #2 opens Accordion #2
</p>
<button data-bs-toggle="collapse" href="#collapseTwo"> Button #2</button>
</center>
</container>
<br>
<div class="container">

<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">
            Accordion #1
        </button>
    </h2>
    <div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
        <div class="accordion-body">

            <div class="accordion" id="sub-accordionExample">
                <div class="accordion-item">
                    <h2 class="accordion-header" id="sub-headingOne">
                        <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#sub-collapseOne" aria-expanded="true" aria-controls="collapseOne">
                            Accordion #1 Sub Item #1
                        </button>
          ...