JSFiddle - React, Tailwind, and code Playground

HTML

<div class="header-bg-two">
	<div class="header-two">
		<ul>
			<li class="header-item"><a href="#">Mac</a>
				<ul>
					<li><a href="#">IMac</a></li>
					<li><a href="#">Mac Mini</a></li>
					<li><a href="#">Macbook</a></li>
					<li><a href="#">Mac Pro</a></li>
				</ul>
			</li>
			<li class="header-item">
			<a href="#">Iphone</a>
			<ul>
					<li><a href="#">IMac</a></li>
					<li><a href="#">Mac Mini</a></li>
					<li><a href="#">Macbook</a></li>
					<li><a href="#">Mac Pro</a></li>
				</ul>
			</li>
			<li class="header-item"><a href="#">Watch</a></li>
			<li class="header-item"><a href="#">Аксессуары</a></li>
			<li class="header-item"><a href="#">Акции</a></li>
		</ul>

		<div class="header-cart"><a href="#">Корзина</a></div>
	</div>
</div>

CSS

.header-bg-two{
    background-color:#333333 ;
}

.header-two{
    max-width: 1170px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-two ul {
    display: flex;
    padding: 0 20px;
    margin: 0;
		height: 50px;
		align-items: center;
		list-style: none;
}
.header-item {
	height: 100%;
}
.header-item li{
    height: 100%;
}

.header-item a{
    display: flex;
    color:#fff;
    font-size: 18px;
    padding-right: 30px;
    list-style-type: none;
    font-family: 'Raleway', sans-serif;
    height: 100%;
		align-items: center;
}

.header-cart a{
    display:flex;
    color: #fff;
    font-family: 'Raleway', sans-serif;
    font-weight: bold;
    
}

.header-item ul{
    display: none;
    position: absolute;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
    z-index: 1;
    color: #000;
		margin: 0px 0 0 -20px;
    height: auto;
}


.header-item li a{
    color: #000;
		line-height: 40px;
}

.header-item:hover > ul{
	display: block;
}