源代碼:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style>
div{
width:500px;
height:309px;
border:50px solid hsla(0,0%,100%,0.5);
background:url(file:///C:/Users/Administrator/Desktop/timg11111.jpg) -50px -50px no-repeat;
}
</style>
</head>
<body>
<div></div>
</body>
</html>
1、HSL顏色模式不太理解。
2、background-clip屬性。
background-clip:border-box;
以border外邊緣爲邊界剪除背景,背景範圍爲border、padding、content。
background-clip:padding-box;
以padding外邊緣爲邊界剪除背景,背景範圍爲padding、content。
background-clip:content-box;
以content外邊緣爲邊界剪除背景,背景範圍爲content。
background-clip屬性實例代碼:
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<style>
body{
background:black;
}
div{
width:200px;
height:200px;
padding:0 50px;
border:10px solid hsla(0,0%,100%,.5);
background:red;
}
.class-padding-box{
background-clip:padding-box;
}
.class-border-box{
background-clip:border-box;
}
.class-content-box{
background-clip:content-box;
}
</style>
</head>
<body>
<div class='class-padding-box'></div>
<div class='class-border-box'></div>
<div class='class-content-box'></div>
</body>
</html>