 .inner
      {
        height: 32px;
        width: 32px;
        background-image: url(support/aqua-yellow-32x32.png);
      }
      .inner_gradient
      {
        height: 32px;
        width: 32px;
        background-size: 32px 32px;
        background-image: linear-gradient(to top left, red, green);
      }
    </style>
  </head>
  <body>
    <div class="outer">
      <div class="inner"></div>
      <div class="inner"></div>
      <div class="inner"></div>
      <div class="inner"></div>
      <div cla