templates/verify.html
<!DOCTYPE html>
<html>
<head>
<title>Verify</title>
</head>
<body>
<main>
<p>An authentication code has been sent to your email. Type it into the form below to confirm your identity. </p>
<form action="/api/val_code" method="POST">
<input type="hidden" name="sid" value="{{ sid }}"></input>
<input type="hidden" name="ck" value="{{ ck }}"></input>
Authentication code:<input type="test" name="ac"></input>
<button type="submit">Submit</button>
<form>
</main>
</body>
</html>