Bootstrap Modal Dialog. Can the grid system be used within a modal context?

Question

I have a Bootstrap modal dialog for which I want to layout the various labels and inputs. I have tried using row/column classes but they do not appear to do anything. What a

Answer 1

Tom Rudge's answer inspired me. You don't need to make the container also be a full-width column itself which Matt Dell pointed out will fail linters.

Make the container container-fluid instead!

bootply showing col-md-12 and container-fluid side by side

<div class="modal-dialog">
    <div class="modal-content">
        <div class="modal-header">
            <h3>Modal with container fluid</h3>
        </div>
        <div class="modal-body">
            <div class="container-fluid">
                <div class="row">
                    <div class="col-md-3">
                        <p>
                            1st col 3
                        </p>
                    </div>
                    <div class="col-md-3">
                        <p>
                            2nd col 3
                        </p>
                    </div>
                    <div class="col-md-3">
                        <p>
                            3rd col 3
                        </p>
                    </div>
                    <div class="col-md-3">
                        <p>
                            4th col 3
                        </p>
                    </div>
                </div>
            </div>
        </div>
        <div class="modal-footer">
            <button class="btn" data-dismiss="modal">Close</button>
        </div>
    </div>
</div>