title: Problem with fixed menu - it covers content
body: <p>I have problem with fixed menu :</p>
  
  <pre><code>header nav.nav__menu--desktop {
      display: flex;
      position: fixed;
      top: 0;
      width: 100%;
      align-items: center;
      height: 60px;
      background: #313639;
      z-index: 999;
  }
  </code></pre>
  
  <p>I used anchors in menu to id sections :</p>
  
  <pre><code>&lt;nav class="nav__menu--desktop"&gt;
      &lt;ul&gt;
          &lt;li&gt;&lt;a href="#"&gt;home&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#aboutUs"&gt;about us&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#ourServices"&gt;services&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#"&gt;contact&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href="#"&gt;help&lt;/a&gt;&lt;/li&gt;
      &lt;/ul&gt;
  &lt;/nav&gt;
  </code></pre>
  
  <p>And when I click on option menu - for example service I have this result:</p>
  
  <p><a href="https://i.stack.imgur.com/villH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/villH.png" alt="enter image description here"></a></p>
  
  <p>My nav covers content [height nav] :<a href="https://i.stack.imgur.com/WPKYA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WPKYA.png" alt="enter image description here"></a></p>