title: When using "height: 100vh" for the container, vertical scrollbar appears
body: <p>I want the content to take the full height of the browser window, but not beyond.</p>
  
  <p>When using 100vh as the container height, I can see the vertical scrollbar appearing.</p>
  
  <pre><code>.container {
    height: 100vh;
    border: 3px solid lightsteelblue;
    border-radius: 10px;
  }
  </code></pre>
  
  <p>What could be the issue?</p>
  
  <p><strong>EDIT:</strong>
  more detailed code:</p>
  
  <p><strong>CSS</strong></p>
  
  <pre><code>html, body {
    margin: 0;
    padding: 0;
  }
  
  * {
    box-sizing: border-box;
  }
  
  .container {
    height: 100vh;
    margin: 0px;
    padding: 0px;
  }
  
  .page_content {
    height: 85vh;
    width: 95vw;
    border: 3px solid lightsteelblue;
    border-radius: 10px;
    overflow-y: auto;
    margin: 0 auto;
  }
  
  .footer {
    height: 14vh;
    width: 95vw;
    margin: 0px auto;
    padding: 0px;
  
  }
  </code></pre>
  
  <p><strong>HTML</strong></p>
  
  <pre><code>&lt;html&gt;
     &lt;body&gt;
       &lt;div class="container"&gt;
          &lt;div class="page_content"&gt;
            ...
          &lt;/div&gt;
          &lt;div class="footer"&gt;
           ...
          &lt;/div&gt;
       &lt;/div&gt;
     &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>