title: bootstrap 4 : button groups with a.btn in the middle
body: <p>I have a button group but the middle button is a link so it should b <code>a</code> tag (i can change its button and use js to navigate but I prefer not to )
  here is the 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-html lang-html prettyprint-override"><code>&lt;link href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" rel="stylesheet"&gt;
  &lt;div class="btn-group nospiner"&gt;
    &lt;button type="button" class="btn btn-warning yekan create-wallet"&gt;&lt;i class="mdi mdi-arrow-down-bold"&gt;&lt;/i&gt; down&lt;/button&gt;
    &lt;a href="link.php" type="button" class="btn btn-warning yekan pjax"&gt; center&lt;/a&gt;
    &lt;button type="button" class="btn btn-warning yekan "&gt;up  &lt;i class="mdi mdi-arrow-up-bold"&gt;&lt;/i&gt; &lt;/button&gt;
  &lt;/div&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>here is the result </p>
  
  <p><a href="https://i.stack.imgur.com/gh7xk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gh7xk.png" alt="enter image description here"></a></p>
  
  <p>as you can see the middle btn has a border and gradient, how can I change it so it would look like buttons? i've tried adding <code>border:none</code> to all <code>.btn</code> and button group it didn't work </p>