title: how to positioning <fieldset> tag?
body: <p>I want to put the <strong>fieldset</strong> on <strong>Center</strong>.</p>
  
  <p><strong>Html code:</strong></p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
    &lt;style&gt;
      body {
        background-color: #f42b68;
        width: 100%;
      }
      fieldset {
        height: 50%;
        width: 80%;
        background: #ffffff;
      }
    &lt;/style&gt;
  &lt;/head&gt;
  &lt;body&gt;
    &lt;center&gt;
      &lt;fieldset&gt;
        &lt;form&gt;
          &lt;input type="text" placeholder="txt"&gt;
        &lt;/form&gt;
      &lt;/fieldset&gt;
    &lt;/center&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Is there any possible way to do it other than using <code>center</code> <strong>tag?</strong></p>