css 背景图片设置水平平铺repeat-x

编辑代码

<!DOCTYPE html>
<html>
<head>
<style>
body{
    background-image:url('/images/online_demo/gradient2.png');
    background-repeat:repeat-x;
}
</style>
</head>

<body>
<h1>Hello World!</h1>
</body>

</html>