Как сделать выпадающее меню на yii2?

Помогите сделать выпадающее меню списком на yii2. Пункт меню "Цены". Нужно, чтобы при наведении отображалось еще два пункта меню с привязкой к страницам.

 <div class="menu-line">
    <div class="container">
        <div class="row">
            <div class="col-md-12">
                <div class="pull-left main-menu">
                <?php
                echo SiteNav::widget([
                    'options' => ['class' => ''],
                    'encodeLabels' => false,
                    'items' => [
                        ['label' => '<span class="ar_left"></span>Главная<span class="ar_right"></span>', 'url' => ['/site/index'], 'options'=>['class' => 'hidden-xs']],
                        ['label' => '<span class="ar_left"></span>Цены<span class="ar_right"></span>', 'url' => ['/site/boost']],
                       // ['label' => '<span class="ar_left"></span>Дуо бустинг<span class="ar_right"></span>', 'url' => ['/site/duoqueue'], 'options'=>['class' => 'hidden-xs']],
                       // ['label' => '<span class="ar_left"></span>Coaching<span class="ar_right"></span>', 'url' => ['/site/coaching'], 'options'=>['class' => 'hidden-xs']],
                        //['label' => '<span class="ar_left"></span>Blog<span class="ar_right"></span>', 'url' => ['/site/works'], 'options'=>['class' => 'hidden-xs']],
                        ['label' => '<span class="ar_left"></span>Помощь<span class="ar_right"></span>', 'url' => ['/site/faq'], 'options'=>['class' => 'hidden-xs']],
                        ['label' => '<span class="ar_left"></span>Быстрый заказ<span class="ar_right"></span>', 'url' => ['/site/custom'], 'options'=>['class' => 'hidden-xs']],
                    ],
                ]);
                ?>
                </div>
                <div class="right-menu pull-right">
                <?php
                if (User::hasRole(['Admin'], true)) $url = ['/manager/index'];
                else if (User::hasRole(['Booster'], false)) $url = ['/booster/index'];
                else $url = ['/account/index'];
                echo SiteNav::widget([
                    'options' => [
                        'class' => 'pull-right',
                        'id' => Yii::$app->user->isGuest ? 'no-login':'auth-user',
                    ],
                    'encodeLabels' => false,
                    'items' => Yii::$app->user->isGuest ?
                        [
                            ['label' => '<span class="ar_left"></span>Войти<span class="ar_right"></span>', 'url' => ['/site/login'], 'options' => ['class' => 'link-login'],/*'javascript:clickLogin()'*/],
                        ]
                        :
                        [
                            ['label' => '<span class="ar_left"></span>Мой аккаунт<span class="ar_center"></span>', 'url' => $url],
                            ['label' => 'Выйти<span class="ar_right"></span>', 'url' => '/logout'],
                        ]
                    ,
                ]);
                ?>
                </div>
            </div>
        </div>
    </div>
</div>