JSFiddle - React, Tailwind, and code Playground

HTML

<nav>
    <ul class="navs">
       <li class="">
          <a class="shop_subcat" href="cat?cid=1">Electronics</a>
             <ul>
                <li>
                   <a href="cat?cid=7">Moble phones</a>
                </li>            
                <li>
                   <a class="shop_subcat" href="cat?cid=16">Computers</a>
                     <ul>
                       <li>
                          <a href="cat?cid=37">Desktops</a>
                       </li>
                       <li>
                          <a class="shop_subcat" href="cat?cid=17">Car Electronics</a>                      
                             <ul>
                                <li>
                                   <a href="cat?cid=43">GPS &amp; Navigation</a>
                                </li>
                             </ul>
                        </li>
                     </ul>
                   </li>
                   <li>
                      <a class="shop_subcat" href="cat?cid=18">TV &amp; Video</a>              
                        <ul>
                           <li>
                              <a href="cat?cid=48">LED TVs</a>
                           </li>
                           <li>
                              <a href="cat?cid=49">Plasma TVs</a>
                           </li>
                         </ul>
                    </li>
                 </ul> 
             </li>
             <li class="">
                <a class="shop_subcat" href="cat?cid=14">Video Games</a>
                   <ul>
                      <li>
                         <a href="cat?cid=30">Nintendo Wii</a>
                      </li>
                   </ul>
              </li>
            </ul>
</nav>

CSS

nav ul ul {
	display: none;
}

	nav ul li:hover > ul {
		display: block;
	}

nav ul {
	background: #efefef; 
	background: linear-gradient(top, #efefef 0%, #bbbbbb 100%);  
	background: -moz-linear-gradient(top, #efefef 0%, #bbbbbb 100%); 
	background: -webkit-linear-gradient(top, #efefef 0%,#bbbbbb 100%); 
	box-shadow: 0px 0px 9px rgba(0,0,0,0.15);
	padding: 0 20px;
	border-radius: 10px;  
	list-style: none;
	position: relative;
	display: inline-table;
}
	nav ul:after {
		content: ""; clear: both; display: block;
	}

nav ul li {
	float: left;
}
	nav ul li:hover {
		background: #4b545f;
		background: linear-gradient(top, #4f5964 0%, #5f6975 40%);
		background: -moz-linear-gradient(top, #4f5964 0%, #5f6975 40%);
		background: -webkit-linear-gradient(top, #4f5964 0%,#5f6975 40%);
	}
		nav ul li:hover a {
			color: #fff;
		}
	
	nav ul li a {
		display: block; padding: 25px 40px;
		color: #757575; text-decoration: none;
	}

nav ul ul {
	background: #5f6975; border-radius: 0px; padding: 0;
	position: absolute; top: 100%;
}
	nav ul ul li {
		float: none; 
		border-top: 1px solid #6b727c;
		border-bottom: 1px solid #575f6a;
		position: relative;
	}
		nav ul ul li a {
			padding: 15px 40px;
			color: #fff;
		}	
			nav ul ul li a:hover {
				background: #4b545f;
			}

nav ul ul ul {
	position: absolute; left: 100%; top:0;
}