title: How do I disable div elements after adding overlay on it?
body: <p>I'm trying to put overlay on my form. Basically I don't want user to access the form and just block the content by adding overlay. I added overlay but I can still give inputs in input fields. How do I stop that? </p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.overlay {
    background: rgba(0, 0, 0, .75);
    text-align: center;
    opacity: 0;
    width: 100 %;
    height: 100 %;
    -webkit-transition: all 0.3s ease - in -out;
    -moz-transition: all 0.3s ease - in -out;
    -o-transition: all 0.3s ease - in -out;
    -ms-transition: all 0.3s ease - in -out;
    transition: all 0.3s ease - in -out;
    opacity: 1;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code> &lt;h1&gt;Hello Plunker!&lt;/h1&gt;
  &lt;div class="overlay"&gt;
    &lt;input type="text"&gt;First name
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>