JSFiddle - React, Tailwind, and code Playground

HTML

<div class="col-md-12">
  <textarea rows="2"></textarea>
</div>

CSS

.col-md-12 textarea {
     -webkit-box-sizing: border-box;
       -moz-box-sizing: border-box;
            box-sizing: border-box;
    width: inherit;
}

.col-md-12 {
    width:100%;
}