Change to button and add spacing

content/get-involved.mdx

@@ -27,11 +27,13 @@ can do so by coming in person to our office. You may also renew your membership
 online, though you must pay more than the usual $2.00 to cover PayPal fees. 
 A one-term renewal via PayPal comes out to $2.37.
 
-<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
-  <input type="hidden" name="cmd" value="_s-xclick"/>
-  <input type="hidden" name="hosted_button_id" value="9065852"/>
-  <input type="image" src="/images/get-involved/renew-paypal.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!"/>
-</form>
+<p>
+  <form action="https://www.paypal.com/cgi-bin/webscr" method="post">
+    <input type="hidden" name="cmd" value="_s-xclick"/>
+    <input type="hidden" name="hosted_button_id" value="9065852"/>
+    <button name="submit" alt="PayPal - The safer, easier way to pay online!">Renew by PayPal</button>
+  </form>
+</p>
 
 </details>