title: Change all select option text to uppercase, Jquery or CSS
body: <p>Having the following country option list and displayed texts are capitalized;</p>
  
  <pre><code>&lt;select id="countrySelect"..&gt;
      &lt;option value="SG"&gt;Singapore&lt;/option&gt;
      &lt;option value="JP"&gt;Japan&lt;/option&gt;
      ...
  &lt;/select&gt;
  </code></pre>
  
  <p>How can those all display-texts be upprecase like <strong>SINGAPORE</strong>, <strong>JAPAN</strong>, and so on?</p>
  
  <p>Any <code>JQuery</code> or <code>CSS</code> way is appreciated, and which one is better?</p>