This is the styling applied

    <style type="text/css">
      button
      {
        background-color: red;
        border: none;
        padding: 0;
        outline: none;
      }

      b
      {
        display: inline-block;
        width: 40px;
        background-color: green;
        line-height: 3;
      }
    </style>

    

Hello?