used classname to set margin and padding to 0

layouts/shortcodes/events/agenda.html

@@ -169,7 +169,7 @@ span.eclipsefdn-agenda-legend-icon-{{ urlize .id }}::after {
           {{ else }}
             {{if .times }}
               <td>
-                <ul style="list-style: none; padding: 0; margin: 0">
+                <ul class="margin-0 padding-0" style="list-style: none;">
                   {{range .times}}
                     <li>{{ . }}</li>
                   {{end}}