I have an HTML page which has a child HTML which gets generated dynamically. I want to change the styles of few child HTML elements,but I'm not able to access any of the child HTML elements
<!DOCTYPE html>
<html lang="en">
<head>
link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css">
<link rel="stylesheet" href="new.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<body>
<iframe id="cartoonVideo" src="http://www.youtube.com/embed/ABCDEFGH" frameborder="0" allowfullscreen></iframe>
**Child html gets generated here**
#document
<!DOCTYPE HTML>
<head>
link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css">
<link rel="stylesheet" href="new.css">
</head>
<body>
<div class="access"></div>
</body>
</html>
</body>
</html>
How do I access the child HTML div which has class as access. Either through CSS or any JavaScript or JQuery methods?