title: Why does a fixed background-image move when scrolling on IE?
body: <p>I'm trying to make <code>background-image</code> fixed.</p>
  
  <p>As you see in <a href="http://the1900.tistory.com/" rel="noreferrer">my blog</a>, the <code>background-image</code> is moving when scrolling on IE 11.</p>
  
  <p>How can I fix this? </p>
  
  <p>This is my CSS:</p>
  
  <pre><code>background-image: url("./images/cover.jpg");
  background-repeat: no-repeat;
  background-position: center center;
  background-attachment: fixed;
  background-size: cover;
  </code></pre>