<div class=“col col-12”>

<form action="" method="POST" role="form">
    <legend>Form title</legend>
    <div class="form-group">
        <label for="">label</label>
        <input type="text" class="form-control" id="" placeholder="Input field">
    </div>
    <button type="submit" class="btn btn-primary">Submit</button>
</form>

</div>