title: Remove Inner Gradient On Top of Bootstrap 3 Button when Clicked
body: <p>Can you please let me know how I can remove the gradient from the Bootstrap 3 Buttons when users click on the buttons: like what is showing in the below image:</p>
  
  <p><img src="https://i.stack.imgur.com/aKRUK.png" alt="enter image description here"></p>
  
  <pre><code>.btn {
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 0;
    font-size: 14px;
    font-weight: normal;
    line-height: 1.42857143;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    -webkit-user-select: none;
       -moz-user-select: none;
        -ms-user-select: none;
            user-select: none;
    background-image: none;
    border: 1px solid transparent;
    border-radius: 4px;
  }
  .btn:focus,
  .btn:active:focus,
  .btn.active:focus {
    outline: thin dotted;
    outline: 5px auto -webkit-focus-ring-color;
    outline-offset: -2px;
  }
  .btn:hover,
  .btn:focus {
    color: #333;
    text-decoration: none;
  }
  .btn:active,
  .btn.active {
    background-image: none;
    outline: 0;
    -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
            box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
  }
  </code></pre>