CSS中background的属性值
- background-color
- background-image
- background-repeat
- background-position
- background-attachment
复合属性:background:background-color background-image background -repeat background-position background-attachment
CSS3新增:不能用background的复合属性
background-size,background-origin,background-clip
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style>
*{
margin: 0;
padding: 0;
}
.pic{
width: 300px;
height:400px;
border: 20px dashed aqua;
padding: 30px;
/* background-color:#f90;
background-image:url(https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1603882574342&di=e
fe3283a838eef10140bcab16bf06371&imgtype=0&src=http%3A%2F%2Fdpic.tiankong.com%2F8i%2Fzu%2FQJ6411171137.jpg);
background-repeat: no-repeat;
background-position: 50% 50%;
background-attachment: fixed; */
background:#f90 url(https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1603882574342&di=e
fe3283a838eef10140bcab16bf06371&imgtype=0&src=http%3A%2F%2Fdpic.tiankong.com%2F8i%2Fzu%2FQJ6411171137.jpg)
no-repeat 50% 50% fixed;
background-size: 100px 100px;
background-origin: border-box;
background-clip: content-box;
}
</style>
</head>
<body>
<div class="pic"></div>
</body>
</html>