Improve use page

Author: rnijveld

nts-pool-management/templates/use.html.j2

@@ -35,10 +35,18 @@ address = "2.{{ app.ke_domain }}"
 mode = "nts"
 address = "3.{{ app.ke_domain }}"</code-block>
   {% else %}
-    <form action = "/use" method="POST">
-      <p> I confirm I have read and accept the <a href="/terms">terms and conditions</a>. In particular, I accept that this pool is experimental, may fail at any time for any reason, and I will not use this information to configure the pool for third parties.</p>
-      <button type="submit" name="accept" value="true">Accept</button>
-    </form>
+    <section class="contained">
+      <form action = "/use" method="POST">
+        <section>
+          <p>
+            I confirm I have read and accept the <a href="/terms">terms and conditions</a>.
+            In particular, I accept that this pool is experimental, and I will not use this
+            information to configure the pool for third parties.
+          </p>
+          <button type="submit" name="accept" value="true">Accept</button>
+        </section>
+      </form>
+    </section>
   {% endif %}
 </section>
 {% endblock %}