title: Whats wrong with this CSS Code: height: calc(2748px / 100vw * 349px);?
body: <p>I want to create a header with a background image. Now, the size of the image is 2748px wide and 349px high. And the image should always fit in. So I created this CSS code, but something is wrong.</p>
  <pre><code>height: calc(2748px / 100vw * 349px);
  </code></pre>