cant find regular expression in python

Question

I am trying to catch this part in regex using python:

 <nav id="center-doc-outline" class="doc-outline is-hidden-desktop" data-bi-name="intopic toc" role="navigation" aria-label="Article Outline">
       <h3>In this article</h3>
       <ol>
          <li><a href="#adcs-technology-review">AD&nbsp;CS Technology Review</a></li>
          <li><a href="#requirements-for-using-adcs">Requirements for Using AD&nbsp;CS</a></li>
          <li><a href="#adcs-basic-lab-scenario">AD&nbsp;CS Basic Lab Scenario</a></li>
          <li><a href="#steps-for-setting-up-a-basic-lab">Steps for Setting up a Basic Lab</a></li>
          <li><a href="#step-1-setting-up-an-enterprise-root-ca">Step 1: Setting Up an Enterprise Root CA</a></li>

          <li><a href="#step-10-verifying-that-the-advanced-adcs-test-setup-functions-properly">Step 10: Verifying that the Advanced AD&nbsp;CS Test Setup Functions Properly</a></li>
          <li><a href="#to-verify-that-the-advanced-adcs-test-setup-functions-properly">To verify that the advanced AD&nbsp;CS test setup functions properly</a></li>
          <li><a href="#see-also">See Also</a></li>
       </ol>
    </nav>

I tried this regex:

re.search("<nav.*</nav>", str)

but I get None.

When I use :

re.search("<nav.*", str)

or

re.search("</nav>", str)

it has matches. what am i doing wrong?