title: Make inputfield clickable everywhere inside button-div
body: <p>I´m implementing a FileUpload and have created <code>&lt;div&gt;</code> with bootstrap button class to make it look better.</p>
  
  <p>But since I did this the <code>input</code> is just clickable at a specific position (above 'aufnehmen').</p>
  
  <p>Can someone tell me how to make the Window open when clicking anywhere on the div?</p>
  
  <p>Here is a fiddle that demonstrates my problem.</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>.btn-lg{
      font-size: 36px !important;
  }
  
  .fileUpload {
      position: relative;
      overflow: hidden;
      margin: 10px;
  }
  
  .fileUpload input.upload {
      position: absolute;
      top: 0;
      right: 0;
      margin: 0;
      padding: 0;
      font-size: 20px;
      cursor: pointer;
      opacity: 0;
      filter: alpha(opacity=0);
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/&gt;
  &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"&gt;&lt;/script&gt;
  
  
  &lt;div class="fileUpload btn btn-primary btn-lg"&gt;
          &lt;span&gt;Foto aufnehmen&lt;/span&gt;
          &lt;input type="file" accept="image/*" name="sampleFile" id="cameraImg" class="upload" onchange="processImg(this)"
                 value=""&gt;
      &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>