title: I have a Problem with a border from a button tag
body: <p>I made an button with this code:</p>
  <p>I already added some CSS code:</p>
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.btn {
    width: 100%;
    height: 50px;
    background-color: #3f9a39;
    color: white;
    border: none;
    text-transform: uppercase;
    letter-spacing: 2px;
  }
  fieldset{
    padding:0;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;fieldset&gt;
     &lt;button type="submit" class="btn btn-lg" id="submit" value="Submit"&gt;Ihre Nachricht absenden&lt;/button&gt;
  &lt;/fieldset&gt;</code></pre>
  </div>
  </div>
  </p>
  <p>At the moment it looks like this:
  <a href="https://i.stack.imgur.com/JSxKG.png" rel="nofollow noreferrer">https://i.stack.imgur.com/JSxKG.png</a></p>
  <p>You can see that I have a border but how can I remove the border ?</p>
  <p>I already tried it with:</p>
  <pre><code>    border: none;
      outline: none;
  </code></pre>
  <p>Sincerely yours</p>