Changes

     <panelSuccess>

     <panelSuccess>

         <gallery mode="packed" widths=300px heights=300px>

         <gallery mode="packed" widths=300px heights=300px>

           Bioswale.png| Bioswale with check dams<br> (vertical scale exaggerated).

           Bioswale.png| Bioswale with check dams<br> (vertical scale exaggerated)  

           Stepped cells.png| Stepped bioretention cells alternative for slopes > 6 %.

           Stepped cells.png| Stepped bioretention cells alternative for slopes >6 %

         </gallery>

         </gallery>

     </panelSuccess>

     </panelSuccess>