html运行实例（cssref_filter_blur

代码示例：（标识：cssref_filter_blur_2）

<!DOCTYPE html>
<html>
<head>
<style>
img.background {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: -1;
  filter: blur(35px);
}

img.circle {
  border-radius: 50%;
  display: block;
  margin: 0 auto;
  height: auto;
  max-width: 60%;
}
</style>
</head>
<body>

<h1>filter 属性</h1>

<p>背景模糊：</p>

<img class="background" src="/static/demo/images/tulip.jpg" alt="Tulip" width="300" height="300">
<img class="circle" src="/static/demo/images/tulip.jpg" alt="Tulip" width="300" height="300">

<p><b>注释：</b>Edge 12 或 Internet Explorer 不支持 filter 属性。</p>

</body>
</html>