<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Dropdown Menu</title>
  <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
  <nav>
    <ul>
      <li><a href="#">Home</a></li>
      <li><a href="#">About</a>
          <ul class="ul-2">
            <li><a href="#">Tashkent</a></li>
            <li><a href="#">Bukhara</a></li>
            <li><a href="#">Fergana</a></li>
            <li><a href="#">Samarkand</a></li>
          </ul>
           </li>
      <li><a href="#">Contacts</a>
      <ul class="ul-3">
            <li><a href="#">Tashkent</a></li>
            <li><a href="#">Bukhara</a></li>
            <li><a href="#">Fergana</a></li>
            <li><a href="#">Samarkand</a></li>
          </ul>
           </li>
       </li>
      <li><a href="#">Videos</a>
      <ul class="ul-4">
            <li><a href="#">Tashkent</a></li>
            <li><a href="#">Bukhara</a></li>
            <li><a href="#">Fergana</a></li>
            <li><a href="#">Samarkand</a></li>
          </ul>
           </li>
       </li>
      <li><a href="#">Profile</a></li>
    </ul>
  </nav>

</body>
</html>

*,html{
  box-sizing: border-box;
}


body{
  margin: 0;
  padding: 0;
  background: #F5F5DC;;
  font-family: 'Poppins',sans-serif;
}

nav{
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #F5F5DC;
}

nav ul{
  margin: 0;
  padding: 0; 
  position: relative;
  display: flex;
}

nav ul li{
  list-style: none;
  position: relative;
  background: #791315;
    margin:1px;
    border-radius: 4px;
  }

nav ul li a{
  text-decoration: none;
  text-transform: uppercase;
  font-weight: 600;
  padding: 30px 33px;
  color: white;
  display: block;
  transition: 0.5s;
}

nav ul li a:hover{
  color: orange;
}

nav ul li a:before{
  content: ' ';
  position: absolute;
  left: 85%;
  border: solid white;
  border-width: 0 3px 3px 0;
  padding: 3px;
  transform: rotate(45deg);
  transition: 0.5s;
}

nav ul li ul li a:before{
  border: none;
}

nav ul li:nth-child(1) a:before{
  border: none;
}


nav ul li:nth-child(5) a:before{
  border: none;
}

nav ul li:hover a:before{
  transform: rotate(405deg);
  border-color: aqua;
}


nav ul li ul{
  display: block;
  min-width: 170px;
  position: absolute;
  margin-top:1px;
  transition: 0.5s;
  opacity: 0;
  visibility: hidden;
  transform: translateY(70px);
}


nav ul li ul li a{
  padding: 20px;
  text-align: center;
  }

nav ul li ul li{
   margin:1px;
   border-radius: 4px;
}


nav ul li:hover ul{
  opacity: 1;
  visibility: visible;
  transform:  translateY(0);
}


li:hover .ul-2 li:nth-child(1){
  animation-name: menu1;
  animation-duration: 0.4s;
  animation-timing-function:ease-in-out;
  
}


li:hover .ul-2 li:nth-child(2){
  animation-name: menu2;
  animation-duration: 0.4s;
  animation-timing-function:ease-in-out;
  
}


li:hover .ul-2 li:nth-child(3){
  animation-name: menu1;
  animation-duration: 0.4s;
  animation-timing-function:ease-in-out;
}


li:hover .ul-2 li:nth-child(4){
  animation-name: menu2;
  animation-duration: 0.4s;
  animation-timing-function:ease-in-out;
  
}

@keyframes menu1{
  0%{
    opacity:0;
  transform: translateX(100px);
  }

  100%{
    opacity: 1;
    transform: translateX(0px);
  }
}


@keyframes menu2{
  0%{
    opacity:0;
  transform: translateX(-100px);
  }

  100%{
    opacity: 1;
    transform: translateX(0px);
  }
}



li:hover .ul-3 li:nth-child(1){
  animation-name: menu3;
  animation-duration: 0.2s;
  animation-timing-function:ease-in-out;
  
}


li:hover .ul-3 li:nth-child(2){
  animation-name: menu3;
  animation-duration: 0.4s;
  animation-timing-function:ease-in-out;
  
}


li:hover .ul-3 li:nth-child(3){
  animation-name: menu3;
  animation-duration: 0.6s;
  animation-timing-function:ease-in-out;
}


li:hover .ul-3 li:nth-child(4){
  animation-name: menu3;
  animation-duration: 0.8s;
  animation-timing-function:ease-in-out;
  
}

@keyframes menu3{
  0%{
    opacity:0;
  transform: scaleX(2);
  }

  100%{
    opacity: 1;
    transform: scaleX(1);
  }
}


li:hover .ul-4 li:nth-child(1){
  animation-name: menu4;
  animation-duration: 0.2s;
  animation-timing-function:ease-in-out;
  
}


li:hover .ul-4 li:nth-child(2){
  animation-name: menu4;
  animation-duration: 0.4s;
  animation-timing-function:ease-in-out;
  
}


li:hover .ul-4 li:nth-child(3){
  animation-name: menu4;
  animation-duration: 0.6s;
  animation-timing-function:ease-in-out;
}


li:hover .ul-4 li:nth-child(4){
  animation-name: menu4;
  animation-duration: 0.8s;
  animation-timing-function:ease-in-out;
  
}

@keyframes menu4{
  0%{
    opacity:0;
  transform: rotateY(100deg) translateX(-325px);
  }

  100%{
    opacity: 1;
    transform:  rotateY(0deg) translateY(0);
  }
}


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