<link href="public/styles/menu.css" rel="stylesheet"></link>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">

<nav class='Menu'>
<div class='wrapper region'>

<div class="topnav" id="myTopnav">
  <a href="./" class="active">ទំព័រ​ដើម</a>
  <a href="#news">ព័ត៌មាន</a>
  <a href="#contact">ទំនាក់ទំនង</a>
  <div class="dropdown">
    <button class="dropbtn">ជំពូក
      <i class="fa fa-caret-down"></i>
    </button>
    <div class="dropdown-content">
      <a href="#">តំណរភ្ជាប់ ១</a>
      <a href="#">តំណរភ្ជាប់ ២ </a>
      <a href="#">តំណរភ្ជាប់ ៣</a>
    </div>
  </div>
  <a href="#about">អំពី​យើង​ខ្ញុំ</a>
  <a href="javascript:void(0);" class="icon" onclick="myFunction()">&#9776;</a>
</div>

</div>
</nav>

<script>
function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}
</script>

.Menu{
    background: var(--background);
}

.Menu .topnav {
    background-color: var(--background);
    overflow: hidden;
  }
  
.Menu .topnav a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font: 18px/1.5 Oswald, Koulen;
  }
  
  
.Menu .active {
    background-color: #262f7a;
    color: white;
}
  
  
.Menu .topnav .icon {
    display: none;
}
  
  
.Menu .dropdown {
    float: left;
    overflow: hidden;
}
  
.Menu .dropdown .dropbtn {
    font: 18px/1.5 Oswald, Koulen;
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    margin: 0;
}
  
.Menu .dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}
  
.Menu .dropdown-content a {
    float: none;
    color: black;
    padding: 10px 16px;
    text-decoration: none;
    display: block;
    text-align: left;
    font: var(--body-font);
}
  
.Menu .topnav a:hover, .dropdown:hover .dropbtn {
    background-color: var(--background-light);
    color: white;
}
  
.Menu .dropdown-content a:hover {
    background-color: #ddd;
    color: black;
}
  
.Menu .dropdown:hover .dropdown-content {
    display: block;
}
  
@media screen and (max-width: 600px) {
    .Menu .topnav a:not(:first-child), .dropdown .dropbtn {
        display: none;
    }
    .Menu .topnav a.icon {
        float: right;
        display: block;
    }
}
  
@media screen and (max-width: 600px) {
    .Menu .topnav.responsive {position: relative;}
    .Menu .topnav.responsive a.icon {
        position: absolute;
        right: 0;
        top: 0;
    }
    .Menu .topnav.responsive a {
        float: none;
        display: block;
        text-align: left;
    }
    .Menu .topnav.responsive .dropdown {float: none;}
    .Menu .topnav.responsive .dropdown-content {position: relative;}
    .Menu .topnav.responsive .dropdown .dropbtn {
        display: block;
        width: 100%;
        text-align: left;
    }
}

Epizy: http://khmerweb.epizy.com