I'm trying to use the `bootstrap-5` grid system inside a `modal` popup.
For testing, I simply took the main modal example from <https://getbootstrap.com/docs/5.0/components/modal/>, and added the grid example inside the `modal-body`:

```
<div class="modal-body">
  <div class="container-fluid">
    <div class="row">
      <div class="col-md-4">.col-md-4</div>
      <div class="col-md-4 ms-auto">.col-md-4 .ms-auto</div>
    </div>
  ....

```

Result: the grid is not respected in any way. But why?

<https://jsfiddle.net/3041fLwk/>