JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://cdn.sencha.io/ext-4.1.1-gpl/resources/css/ext-all.css">
<div id="grid-example" style="padding:20px;"></div>
<select name="Country" multiple size="5">
  <option value="USA">USA</option>
  <option value="Russia">Russia</option>
  <option value="India">India</option>
  <option value="Britain">Britain</option>
    <option value="USA">USA</option>
  <option value="Russia">Russia</option>
  <option value="India">India</option>
  <option value="Britain">Britain</option>
    <option value="USA">USA</option>
  <option value="Russia">Russia</option>
  <option value="India">India</option>
  <option value="Britain">Britain</option>
</select>

CSS

.x-grid-row .x-grid-cell-inner {
    		white-space: normal;
    	}
    	.x-grid-row-over .x-grid-cell-inner {
    		font-weight: bold;
    		white-space: normal;
    	}