<div class="wrapper">
        <div id="menu" class="menu">
            <ul id="list" class="menu_list">
<!--                / class Item -- JS /-->
                <li class="menu_list_item">
                    <span class="menu_list_item_span menu_list_item_span-apple spanJS">Apple</span>
                    <div class="submenu">
                        <ul class="submenu_list">
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">iPhone</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 523668</p>
                                        <img class="photo" src="images/iphone.jpg" width="87" height="174" alt="iPhone">
                                        <p class="product_discount">Акция</p>
                                        <h3 class="product_title">Смартфон Apple iPhone 14 128GB Midnight (PUFF3RX/A)</h3>
                                        <p class="product_price">37 499 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку смартфона Apple iPhone 14 128GB Midnight</p>
                                    </div>
                                </div>
                            </li>
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">Mac</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 523897</p>
                                        <img class="photo" src="images/macbook.jpg" width="200" height="117" alt="macbook">
                                        <p class="product_best_price">Наилучшая цена</p>
                                        <h3 class="product_title">Ноутбук APPLE MacBook Air 13"M1 256GB 2020 (MIND3UA/A) Gold MIND3</h3>
                                        <p class="product_price">39 999 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку ноутбука APPLE MacBook Air 13"M1 256GB 2020</p>
                                    </div>
                                </div>
                            </li>
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">iPad</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 523444</p>
                                        <img class="photo" src="images/iPad.jpg" width="140" height="200" alt="iPad">
                                        <p class="product_discount">Акция</p>
                                        <h3 class="product_title">Планшет Apple iPad 10.2" 4G 64Gb Space Grey (MK473RK/A) 2021</h3>
                                        <p class="product_price">23 999 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку планшета Apple iPad 10.2" 4G 64Gb Space Grey</p>
                                    </div>
                                </div>
                            </li>
                        </ul>
                    </div>
                </li>
                <!--                / class Item -- JS /-->
                <li class="menu_list_item">
                    <span class="menu_list_item_span menu_list_item_span-energy spanJS">Электропотребление</span>
                    <div class="submenu">
                        <ul class="submenu_list">
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">Генераторы</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 5234789</p>
                                        <img class="photo" src="images/generator.jpg" width="200" height="200" alt="generator">
                                        <p class="product_discount">Акция</p>
                                        <h3 class="product_title">Генератор Marcher бензиновий PGG 3/1, 230В, max 3кВт, (1.042-207.0)</h3>
                                        <p class="product_price">27 999 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку генератора Marcher бензиновий PGG 3/1, 230В, max 3кВт</p>
                                    </div>
                                </div>
                            </li>
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">Повербанки</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 5234435</p>
                                        <img class="photo" src="images/powerbank.jpg" width="116" height="174" alt="powerbank">
                                        <p class="product_discount">ХИТ</p>
                                        <h3 class="product_title">Портативный акумулятор Trust Primo ECO 20000 mAh Black (24676)</h3>
                                        <p class="product_price">2 999 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку портативного акумулятора Trust Primo ECO 20000 mAh Black</p>
                                    </div>
                                </div>
                            </li>
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">Фонарики</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 5235896</p>
                                        <img class="photo" src="images/lamp.jpg" width="122" height="174" alt="lamp">
                                        <p class="product_discount">ХИТ</p>
                                        <h3 class="product_title">Кемпинговий фонарик Philips LED Camping luminaria Cicero (929003241607)</h3>
                                        <p class="product_price">1 599 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку кемпингового фонарик Philips LED Camping luminaria Cicero</p>
                                    </div>
                                </div>
                            </li>
                        </ul>
                    </div>
                </li>
                <!--                / class Item -- JS /-->
                <li class="menu_list_item">
                    <span class="menu_list_item_span menu_list_item_span-smartphone spanJS" >Смартфоны и телефоны</span>
                    <div class="submenu">
                        <ul class="submenu_list">
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subTitleJS">Смартфоны</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 5235675</p>
                                        <img class="photo" src="images/smartphone.jpg" width="200" height="200" alt="smartphone">
                                        <p class="product_discount">ХИТ</p>
                                        <h3 class="product_title">Смартфон Black-view BV4900 Pro 4/64GB DS Black</h3>
                                        <p class="product_price">7 599 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку смартфона Black-view BV4900 Pro 4/64GB DS Black</p>
                                    </div>
                                </div>
                            </li>
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">Наушники</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 5235678</p>
                                        <img class="photo" src="images/headphones.jpg" width="113" height="174" alt="headphones">
                                        <p class="product_discount">ХИТ</p>
                                        <h3 class="product_title">Навушники Bluetooth Sony WH-CH510L Blue</h3>
                                        <p class="product_price">1 249 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку наушников Bluetooth Sony WH-CH510L Blue</p>
                                    </div>
                                </div>
                            </li>
                            <!--                / class subItem -- JS /-->
                            <li class="submenu_list_item">
                                <span class="submenu_list_item_span subSpanJS">Чехлы</span>
                                <div class="product">
                                    <div class="wrapper_product">
                                        <p class="product_code">Код товару: 5235328</p>
                                        <img class="photo" src="images/case.jpg" width="97" height="200" alt="case">
                                        <p class="product_discount">ХИТ</p>
                                        <h3 class="product_title">Case</h3>
                                        <p class="product_price">1 249 </p>
                                        <button class="product_button">Купить</button>
                                        <p class="product_congratulations">Спасибо за покупку Case</p>
                                    </div>
                                </div>
                            </li>
                        </ul>
                    </div>
                </li>
            </ul>
        </div>
    </div>
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
li {
    list-style-type: none;
}
li:last-child {
    margin-bottom: 0;
}
a {
    text-decoration: none;
    outline: none;
}
span {
    cursor: pointer;
}
.wrapper {
    max-width: 1920px;
    width: 100%;
    margin: 0 auto;
}
.menu {
    padding-top: 100px;
}
.menu_list {
    background-color: #fff;
    max-width: 360px;
    width: 100%;
    padding: 12px 0 12px 12px;
    max-height: 100%;
}
.menu_list_item {
    display: flex;
    height: 48px;
    box-sizing: border-box;
    list-style-type: none;
    position: relative;
}
.menu_list_item_span {
    max-width: 360px;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    padding-left: 50px;
    padding-right: 25px;
    transition: background-color ease-in-out 0.4s;
    font-weight: bold;
    font-size: 16px;
    color: #222d4a;
    border-radius: 20px;
    position: relative
}
.menu_list_item_span::before {
    position: absolute;
    top: 50%;
    left: 10px;
    transform: translateY(-50%);
}
.menu_list_item_span::after {
    content: url("../images/arrow.svg");
    position: absolute;
    top: 50%;
    right: 16px;
    transform: translateY(-50%);
}
.menu_list_item_span:hover {
    background-color: #f7f8f9;
}
.menu_list_item_span-apple::before {
    content: url("../images/apple.svg");
}
.menu_list_item_span-energy::before {
    content: url("../images/energy.svg");
}
.menu_list_item_span-smartphone::before {
    content: url("../images/smartphone.svg");
}
.submenu {
    position: absolute;
    top: -10px;
    left: 360px;
    display: none;
    max-width: 320px;
    width: 100%;
}
.menu_list_item.active .submenu {
    display: flex;
}
.submenu_list {
    width: 100%;
    padding: 12px 0 12px 12px;
    height: 100%;
}
.submenu_list_item {
    position: relative;
}
.submenu_list_item_span {
    display: flex;
    background-color: #fff;
    align-items: center;
    border-radius: 40px;
    color: #222d4a;
    font-weight: 700;
    font-size: 16px;
    padding-left: 16px;
    min-height: 48px;
    padding-right: 40px;
    transition: background-color .3s ease-in-out;
    position: relative
}
.submenu_list_item_span::after {
    content: url("../images/arrow.svg");
    position: absolute;
    top: 50%;
    right: 24px;
    transform: translateY(-50%);
}
.submenu_list_item_span:hover {
    background-color: #f7f8f9;
}
.product {
    display: none;
    position: absolute;
    top: 0;
    right: -300px;
    padding: 16px 0;
    max-width: 240px;
    width: 100%;
    background-color:  snow;
    border-radius: 10px;
    border: 2px solid deepskyblue;
    box-sizing: border-box;
}
.submenu_list_item.active .product {
    display: block;
}
.wrapper_product {
    text-align: center;
    max-width: 210px;
    width: 100%;
    margin: 0 auto;
}
.product_code {
    text-align: right;
    padding: 2px 4px;
    border-radius: 2px;
    color: #777e90;
    font-size: 12px;
    box-sizing: border-box;
    margin-bottom: 10px;
}
.photo {
    max-width: 100%;
    min-height: auto;
    margin-bottom: 50px;
}
.product_discount {
    max-width: 60px;
    width: 100%;
    height: 18px;
    border-radius: 2px;
    font-size: 12px;
    color: #fff;
    text-transform: uppercase;
    font-weight: 700;
    padding: 1px 8px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #d23e00;
    margin-bottom: 20px;
}
.product_title {
    font-weight: bold;
    font-size: 16px;
    line-height: 1.15;
    color: #292b31;
    margin-bottom: 30px;
}
.product_price {
    color: #fd3321;
    font-size: 20px;
    font-weight: 700;
    margin-block: 18px;
    text-align: left;
}
.product_best_price {
    font-size: 20px;
    font-weight: 400;
    margin-block: 10px;
    background-color: #569e06;
    color: white;
    max-width: 150px;
    width: 100%;
}
.product_button {
    padding: 10px 0;
    max-width: 140px;
    width: 100%;
    border-radius: 4px;
    font-size: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #00ac45;
    border: 2px solid greenyellow;
    color: white;
    transition: background-color 0.3s ease-in-out;
}
.product_button:hover {
    background-color: #008a35;
}
.product_congratulations {
    position: absolute;
    top: 0;
    left: 0;
    max-width: 300px;
    width: 100%;
    min-height: 100%;
    display: none;
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    z-index: 2;
    background-color: azure;
    color: purple;
    font-size: 26px;
}
.product.active .product_congratulations {
    display: flex;
}
const menu = document.getElementById('menu');
menu.addEventListener('click', (event) => {
    //______Условие выполняется если мы нажимаем на SPAN_____//
    if (event.target.tagName === 'SPAN') {
        //______Создаем переменную текущий родитель(li)--Span_____//
        const currentParentLI = event.target.parentNode;
        //______Перебираем li которые имеют class .active_____//
        document.querySelectorAll('.active').forEach((activeParentLI) => {
            if (activeParentLI !== currentParentLI) {
                activeParentLI.classList.toggle('active', activeParentLI.contains(currentParentLI));
            }
        });
        currentParentLI.classList.toggle('active');
    }
    if (event.target.tagName === 'BUTTON') {
        const currentParentDIV = document.querySelector('.wrapper_product').closest('.product');
        console.log(currentParentDIV);
        currentParentDIV.classList.toggle('active');
        setTimeout(() => {
            document.querySelectorAll('.active').forEach((activeEl) => {
                activeEl.classList.remove('active')
            })
        },3000);
    }
});

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External JavaScript

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