JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  <textarea id="txt1">some text</textarea>
  <textarea id="txt2"></textarea>
</div>

CSS

textarea {
    background: url(http://upload.wikimedia.org/wikipedia/commons/thumb/0/02/Transparent_square.svg/120px-Transparent_square.svg.png) repeat scroll 0 0 transparent;  
}

#txt1 {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
}

#txt2 {
    position: relative;
    z-index: 1;
}