JSFiddle - React, Tailwind, and code Playground

HTML

<div class="cont">
<div class="left">
  &nbsp;
</div>
<div class="right">
  <select>
    <option>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</option>
    <option>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</option>
    <option>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</option>
    <option>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</option>
  </select>
</div>
</div>

CSS

.cont { width: 90%; }
div { float: left;}
.left { width: 70%; }
.right { width: 30%; }
select { display: block; width: 100%;}