Check for div hide and unhide

by Himanshu Kesarvani

HTML

<div class="outer">
  <div class="middle">
    <div class="inner">
      <h1>The Content</h1>
      <p>Once upon a midnight dreary...</p>
    </div>
  </div>
</div>

CSS

.outer {
  display: table;
  position: absolute;
  height: 100%;
  width: 100%;
}

.middle {
  display: table-cell;
  vertical-align: middle;
}

.inner {
  margin: 0 auto;
  width: 400px;
  text-align: center;
  /*whatever width you want*/
}

JavaScript

function blink() {
    var f = document.getElementsByClassName('inner')[0];
    console.log(f);
    setTimeout(function() {
      f.style.display = (f.style.display == 'none' ? '' : 'none');
    }, 500);
  }
  
  blink();