下面的实例演示了如何创建一个带有彩虹颜色和文本的线性渐变 - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
    #grad1 {
      height: 55px;
      background: -webkit-linear-gradient(left, red, orange, yellow, green, blue, indigo, violet);
      /* Safari 5.1 - 6.0 */
      background: -o-linear-gradient(left, red, orange, yellow, green, blue, indigo, violet);
      /* Opera 11.1 - 12.0 */
      background: -moz-linear-gradient(left, red, orange, yellow, green, blue, indigo, violet);
      /* Firefox 3.6 - 15 */
      background: linear-gradient(to right, red, orange, yellow, green, blue, indigo, violet);
      /* 标准的语法（必须放在最后） */
    }
  </style>
</head>
<body>

  <div id="grad1" style="text-align:center;margin:auto;color:#888888;font-size:40px;font-weight:bold">
    渐变背景
  </div>

  <p><strong>注意：</strong> Internet Explorer 9 及之前的版本不支持渐变。</p>

</body>
</html>
        