原理:利用伪元素和transform.scale()属性
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.box {
width: 500px;
margin: 0 auto;
}
.line {
position: relative;
padding: 10px;
}
.line:after {
content:"";
position: absolute;
left: 0;
bottom: 0;
width: 100%;
height: 1px;
background-color: green;
transform:scaleY(.5);
}
</style>
</head>
<body>
<div class="box">
<h3>缩放方法</h3>
<div class="line">
</div>
</div>
</body>
</html>
0.5px盒子
.line:after {
content:"";
position: absolute;
left: 0;
bottom: 0;
width: 100%;
height: 100%;
border:1px solid #000;
transform:scale(.5, .5);
}
还有几种绘制方法,例如线性渐变、background-image、border-image、meta viewport等。