<!DOCTYPE HTML>
<html>
<head>
<style>
    div {
        border: 5px navy;
        border-style: dotted double;
        background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIgdmlld0JveD0iMCAwIDEwMCAxMDAiPgogIDxjaXJjbGUgY3g9IjUwIiBjeT0iNTAiIHI9IjQwIiBmaWxsPSJyZWQiLz4KPC9zdmc+'), green;
        width: 200px;
        height: 200px;
    }
</style>
<script>
    if (window.internals)
        window.internals.settings.setMockScrollbarsEnabled(true);
</scri