<!DOCTYPE html>
<html>
<head>
    <title>Card &ndash; the better way to collect credit cards</title>
    <meta name="viewport" content="initial-scale=1">
    <!--- load card styling -->
    <link rel="stylesheet" type="text/css" href="card.css">
</head>
<body>
    <style>
        #demo-container {
            width: 100%;
            max-width: 350px;
            margin: 50px auto;
        }

        form {
            margin: 30px;
        }
        input {
            width: 200px;
            margin: 10p