Tryit My-Help HTML

<!DOCTYPE html>
<html>
<head>
<style>

body {
  font-family: tahoma, Helvetica, sans-serif;
  direction:rtl;
}

nav {
  color: #fff;
  min-width: 100%;
}

nav ul {
  padding: 0;
  margin: 0;
  list-style: none;
  position: relative;
  background-color: #333;
}

nav ul li {
  display: inline-block;
  float: none;
  white-space: nowrap;
}

nav a {
  display: block;
  padding: 5px;
  color: #fff;
  font-size: 17px;
  line-height: 30px;
  text-decoration: none;
}

nav a:hover {
  color: #FFF;
  background-color: #5db616;
  transition: all .3s ease;
}

nav ul li a.subitem::after {
 content: ' \25BE';
}

nav ul ul {
  display: none;
  position: absolute;
  top: 100%;
}

nav ul li:hover>ul {
  display: inherit;
  transition: all .3s ease;
}

nav ul ul li {
  min-width: 170px;
  display: list-item;
  position: relative;
}

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

</style>
</head>
<body>

<nav>
  <ul>
    <li><a href="#">خانه</a></li>
    <li><a href="#">لینک 1</a></li>
    <li><a href="#" class="subitem">لینک 2</a>
      <ul>
        <li><a href="#" class="subitem2">زیرمنو1</a>
          <ul>
            <li><a href="#">1</a></li>
            <li><a href="#">2</a></li>
            <li><a href="#">3</a></li>
            <li><a href="#">4</a></li>
          </ul>
        </li>
        <li><a href="#">زیرمنو2</a>
          <ul>
            <li><a href="#">1</a></li>
            <li><a href="#">2</a></li>
          </ul>
        </li>
      </ul>
    </li>
    <li><a href="#" class="subitem">لینک 3</a>
      <ul>
        <li><a href="#">1</a></li>
        <li><a href="#">2</a></li>
      </ul>
    </li>
  </ul>
</nav>

</body>
</html>

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