title: How to create dropmenu?
body: <p>I want to create dropmenu, but when I click headline main menu, drop menu is inline. I don,t know where is problem. I will gratefull if someone help me.</p>
  
  <pre><code>nav{
      display:flex;
      background-color:black;
      text-transform:uppercase;
      padding-top:30px;
      padding-bottom:30px;
      font-size:15px;
      justify-content:center;
  }
  
  nav ul{
      display:flex;
  }
  
  nav ul li{
      list-style:none;
  }
  
  nav ul li a{
      text-decoration:none;
      color:white;
      position:relative;
      letter-spacing:2px;
      margin:20px;
  }
  
  nav ul li ul li{
      display:none;
  }
  
  nav ul li:hover ul li{
      display:block;
  }
  </code></pre>