<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
div {
width: 400px;
height: 400px;
padding:10px;
margin: 15px;
border:10px dashed green;
}
div {
background: url("1.png") no-repeat;
float:left;
}
div img {
width: 100%;
}
</style>
</head>
<body>
<div class="box1">box1</div>
</body>
</html>
