JSFiddle - React, Tailwind, and code Playground

by Antkaz

HTML

<div class="horizontal-top-menu-color-antfas">
<ul class="horizontal-top-menu-antfas">
    <div class="bg-menu-right"></div>
    <div class="bg_menu-left"></div>
    <li><a href="">Тест 1</a></li>
    <li><a href="">Тест 2</a>
      <ul>
      <li><a href="">Тест 1</a></li>
        <li><a href="">Тест 2</a></li>
      </ul>
    </li>
    <li><a href="">Тест 3</a></li>
  </ul>
</div>

CSS

/**Top menu**/
.horizontal-top-menu-color-antfas {
  margin-top:30px;
  float: left;
}
.bg-menu-right {
	background: url("./images/bg-menu-right.png") no-repeat;
	width: 46px;
	height: 50px;
	float: right;
	margin: -1px -54px 0 0;
}

.bg_menu-left {
	background: url("./images/bg-menu-left.png") no-repeat;
	width: 46px;
	height: 50px;
	float: left;
	margin: -1px 0 0 -31px;
}

.horizontal-top-menu-antfas,.horizontal-top-menu-antfas ul
{
	margin: -20px 0 0 0;
	padding: 0 15px;
	background-image: -moz-linear-gradient( 90deg, rgb(0,174,223) 0%, rgb(0,121,186) 100%);
	  background-image: -webkit-linear-gradient( 90deg, rgb(0,174,223) 0%, rgb(0,121,186) 100%);
	  background-image: -ms-linear-gradient( 90deg, rgb(0,174,223) 0%, rgb(0,121,186) 100%);
	  box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.27);

	font-family: 'Noto Sans';
	box-shadow: 0px 0px 0px #d6d6d6;
	min-width:120px;
	height: 47px;
	list-style:none;
	font-size:14px;
	float:right;
	border-radius: 7px;
    z-index: 999;
}
/*Links*/
.horizontal-top-menu-antfas a
{
	display:block;
	padding:5px 10px;
	text-decoration:none;
	text-align:center;
}

.horizontal-top-menu-antfas li 
{
	float:left;
	
}

/*Root items*/
.horizontal-top-menu-antfas li a.root-item-antfas
{
	color:#fff;
	padding:12px 12px 19px 12px;
}
.sss{
	display: none;
}
.sss
{
	top:40px;
	width: 20px;
	border-bottom: 2px solid #baff00;
	margin: -1px auto;
} 

.horizontal-top-menu-antfas li:hover a.root-item-antfas
{
	
	
}
/*Root menu selected*/
.horizontal-top-menu-antfas li a.root-item-selected-antfas
{
	
	color:#fff;
	padding:12px 12px;
}

/*Child-items selected*/
.horizontal-top-menu-antfas li.item-selected-antfas
{
	background:#D6D6D6;
	color:#fff;
}

/*Sub-menu box*/
.horizontal-top-menu-antfas li ul
{
	position:absolute;
	/*top:-999em;*/
	margin-top: 0px;
	display:none;
	z-index:500;
	font-size: 13px;
	height:auto;
	/*width:12em;*/
	width:200px;
	background:#ffffff;
	border-radius: 5px;
}
.horizontal-top-menu-antfas ul {
	padding: 0;
}
/*Sub-menu...