画一条0.5px 的线HTMLCSS

HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./line.css">
</head>

<body>
    <h1>第一条线</h1>
    <div class="line">
        <div class="l"></div>
    </div>
    <div class="line2">
        <div class="l"></div>
    </div>
</body>

</html>

CSS

.line{
    transform: scaleY(0.5);
    width: 100%;
}
.line2{
    width: 100%;
    margin-top: 200px;
}
.l{
    border-top: 1px solid #ccc;

}