title: Hide/Remove input number arrows in Opera
body: <p>I would like to hide/remove the input[type=number] up and down arrows displayed in all of the main desktop browsers.  </p>
  
  <p>The following CSS works in Firefox Mozilla, Safari and Chrome and I belive Internet Explorer, but not in Opera.</p>
  
  <pre><code>input::-webkit-outer-spin-button,
  input::-webkit-inner-spin-button {
      -webkit-appearance: none;
      margin: 0;
  }
  </code></pre>
  
  <p>How would I be able to apply this effect to the Opera web browser?</p>