I currently have a Bootstrap grid that looks as follows:
The code is:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.1/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity="sha384-F3w7mX95PdgyTmZZMECAngseQB83DfGTowi0iMjiWaeVhAn4FJkqJByhZMI3AhiU"
crossorigin="anonymous">
<title>Example</title>
</head>
<body>
<div class="container-fluid">
<div class="row justify-content-center">
<div class="align-self-center">
<h1>Box 1</h1>
</div>
</div>
<div class="row">
<div class="col-6">
<div id="left-panel" class="row justify-content-center">
<div class="align-self-center">
Box 2
</div>
</div>
</div>
<div id="right-panel" class="col-6">
<div class="row justify-content-center">
<div class="align-self-center">
Box 3
</div>
</div>
</div>
</div>
</div>
</body>
</html>
I would like to add a Box 4 to the grid, as seen below:
How would I amend my code to do this?
Thanks!

