<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #test{
            margin: 0 auto;
            width: 260px;
            height: 50px;
            border: solid 1px #666;
            text-align: center;
            line-height: 50px;
            background-color: #ccc;
        }
    </style>
</head>
<body>
    <div id="test">
        程序猿，一群抓了写代码的人。
    </div>
</body>
</html>