Update: try a different ad style

Author: bnmnetp

runestone/common/project_template/_templates/plugin_layouts/sphinx_bootstrap/layout.html

@@ -341,7 +341,7 @@ <h4>Before you keep reading...</h4>
   {% if dynamic_pages == 'True' %}
     {% raw %}
       {% if show_ethical_ad  %}
-      <div data-ea-publisher="runestoneacademy" data-ea-type="text"></div>
+      <div data-ea-publisher="runestoneacademy" data-ea-type="image" data-ea-style="stickybox"></div>
       {% endif %}
     {% endraw %}
   {% endif %}