Adding prominent link to Covid procedures

Author: escowles

general-info/attend.html

@@ -27,6 +27,9 @@ <h1>Attend Code4Lib</h1>
                         </p>
                     {% endif %}
 
+                    <h3>Covid Procedures</h3>
+                    <p>Attendance will be subject to <a href="https://ehs.princeton.edu/VisitorPolicy">Princeton's visitor policy</a>. The policy requires that visitors to campus be fully vaccinated, show proof of a recent negative Covid-19 test, or wearing a face covering at all times inside campus buildings.</p>
+
                     {% if site.data.registration.workshop-only.show-button %}
                         <h3>Pre-Conference Workshops</h3>
                         <p><a class="btn btn-lg btn-warning" href="{{ site.data.registration.workshop-only.url }}">Pre-Conference Registration</a></p>