title: What is "<meta name="viewport" content="width=device-width, initial-scale=1">"?
body: <p>I want to know what this sample of code means :</p>
  
  <pre><code>&lt;meta name="viewport" content="width=device-width, initial-scale=1"&gt;
  </code></pre>
  
  <p>Does somebody know ?</p>