<form class="form-horizontal well">
    <fieldset>
        <div class="control-group">
            <label class="control-label" for="firstName">First Name</label>
            <div class="controls">
                <input id="firstName" type="text" class="input-xlarge">
            </div>
        </div>
        <!-- More HTML... -->
        <div class="control-group">
            <label class="control-label" for="birthday">Birthday</label>
            <div class="controls">
                <input id="birthday" type="text" class="date input-xlarge">
            </div>
        </div>
        <div class="form-actions">
            <button type="submit" class="btn btn-primary">Save changes</button>
            <button class="btn">Cancel</button>
        </div>
    </fieldset>
</form>