Using `.. contents::` causes raw CSS to show up at the top of the page when using readme-renderer >= 37.0

```rst
=====
Title
=====

.. contents:: Table of Contents
:depth: 2

Heading 1
---------
Description

Heading 2
~~~~~~~~~
Long text about this
```

Produces weird results (on top). `` and `` tags not opened/closed properly - result in a broken view.

Reproduce the supplied reStructuredText example with readme-renderer >= 37.0 and inspect the rendered page around the Table of Contents. Confirm how the and tags are emitted; done when the page no longer shows raw CSS and the tags are properly opened and closed.

Written by the indexing model from the issue text.