JSFiddle - React, Tailwind, and code Playground

HTML

<div class="footer">
  <textarea id="id" rows=1></textarea>
</div>

CSS

.footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0;
    margin:0;
}
textarea {
    background-color: red;
    border: none;
    padding: 0;
    margin:0;
    height: 30px;
}