flexBox 测试模板

网页的测试模板

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
    html, body, h1, h2, h3, h4, h5, h6, p, img, ol, ul, li, form, table, tr, th, td {
        border: 0;
        border-collapse: collapse;
        border-spacing: 0;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    //样式
</style>
</head>
<body>
//内容
</body>
</html>