MAINT: add rel=noopener to external links to improve performance and …

…prevent security vulnerabilities; update heading levels to address accessibility issue #45

index.html

@@ -367,13 +367,13 @@ <h3>Email Template for Anti-Harassment Reporting</h3>
       <div class="container headline-container">
         <section id="donate">
           <div class="container">
-            <h2>Make a Donation</h2>
+            <h3>Make a Donation</h3>
 
             <p>  At Code for San José, civic tech means so much more than helping communities understand and navigate local government. </p>
 
             <p>  It also means working harder than ever to reach more people and communities.</p>
 
-            <p><a class="btn btn-primary btn-lg" href="https://www.codeforamerica.org/donate-to-a-brigade" role="button">Donate Now!</a></p> 
+            <p><a class="btn btn-primary btn-lg" href="https://www.codeforamerica.org/donate-to-a-brigade" role="button" target="_blank" rel="noopener">Donate Now!</a></p> 
 
             <p>Your generous gift will support our renewed efforts to connect to all of San José through hosting biweekly community meetings, as well as events like the National Day of Civic Hacking.  Your donation funds:</p>
 
@@ -387,7 +387,7 @@ <h2>Make a Donation</h2>
 
             <p>The Donate button will take you to Code for America’s Donate page. Please select Code for San Jose from the Brigade dropdown menu on the Donate page to make sure the funds are earmarked for us.</p>
 
-            <h3>Thank you!</h3>
+            <strong>Thank you!</strong>
           </div>
         </section>
       </div>