<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
html, body, div {
margin: 0;
padding: 0;
}
/*表示获取内容的第一行*/
#box:first-line {
color: aqua;
}
/*表示获取内容的第一个字*/
#box:first-letter{
font-size: 500px;
}
</style>
</head>
<body>
<div id="box">
mother fuck
mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother
fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck mother fuck
</div>
</body>
</html>
