<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>背景图片应用1</title>
<style>
.backgroud{
background-image:url('./1.jpg');
background-repeat:no-repeat;
}
</style>
</head>
<body>
<div class="backgroud">
</div>
</body>
</html>
(img填写你的图片地址就可以)