diff --git a/src/OFS/dtml/access.dtml b/src/OFS/dtml/access.dtml
index cf0fdfbdda..3534283e92 100644
--- a/src/OFS/dtml/access.dtml
+++ b/src/OFS/dtml/access.dtml
@@ -4,7 +4,7 @@
     <dtml-var manage_tabs>
   </dtml-if>
 </dtml-with>
-<p class="form-help">
+<p>
   The listing below shows the current security settings for this item.
   Permissions are rows and roles are columns.  Checkboxes are used to
   indicate where roles are assigned permissions. You can also assign
@@ -13,7 +13,7 @@
   its subobjects.
 </p>
 
-<p class="form-help">
+<p>
   When a role is assigned to a permission, users with the given role
   will be able to perform tasks associated with the permission on this
   item. When the <em>Acquire permission settings</em> checkbox is selected
@@ -23,144 +23,131 @@
 </p>
 
 
-<div>
-  <form action="manage_reportUserPermissions" method="GET">
-    Username:
-    <input type="text" name="user" size="20" />
-    <input type="submit" value="Show me the user permissions and roles in the context of the current object" />
-  </form>
-</div>
+<form action="manage_reportUserPermissions"
+      method="GET"
+      class="form-inline">
+  <div class="form-group mb-2">
+    <label for="username" class="form-label mr-sm-2">
+      Username:
+    </label>
+    <input type="text"
+           class="form-control mr-sm-2"
+           id="username"
+           name="user"
+           size="20" />
+    <input type="submit"
+           class="form-control btn btn-outline-info mr-sm-2"
+           value="Show me the user permissions and roles in the context of the current object" />
+  </div>
+</form>
 
 <dtml-with expr="_.namespace(valid_roles=valid_roles())">
   <form action="manage_changePermissions" method="post">
 
-    <table width="100%" cellspacing="0" cellpadding="2" border="0" nowrap>
-      <tr class="list-header">
-        <dtml-unless isTopLevelPrincipiaApplicationObject>
-          <td>&nbsp;</td>
-        </dtml-unless>
-        <td align="left" valign="top">
-          <div class="form-label">
-          <strong>Permission</strong>
-          </div>
-        </td>
-        <td align="left" colspan="<dtml-var expr="_.len(valid_roles)">">
-          <div class="form-label">
-          <strong>Roles</strong>
-          </div>
-        </td>
-      </tr>
+    <table class="table table-striped table-hover" nowrap>
+      <thead>
+        <tr class="table-secondary">
+          <dtml-unless isTopLevelPrincipiaApplicationObject>
+            <th scope="col">&nbsp;</th>
+          </dtml-unless>
+          <th scope="col">
+            Permission
+          </th>
+          <th scope="col" colspan="<dtml-var expr="_.len(valid_roles)">">
+            Roles
+          </th>
+        </tr>
 
       <dtml-in permission_settings mapping>
 
-      <dtml-if "not (_['sequence-index']%10)">
-      <tr class="row-normal">
-        <dtml-unless isTopLevelPrincipiaApplicationObject>
-        <td align="left" valign="top">
-          <div class="form-label">
+        <dtml-if "not (_['sequence-index']%10)">
+        <tr>
+          <dtml-unless isTopLevelPrincipiaApplicationObject>
+          <td>
             <strong>
               <a href="manage_acquiredForm">Acquire<dtml-unless sequence-index><BR>permission<BR>settings</dtml-unless></a>?
             </strong>
-          </div>
-        </td>
-        </dtml-unless>
-        <td></td>
-        <dtml-in valid_roles>
-        <td align="left">
-          <div class="list-item">
-            <a href="manage_roleForm?role_to_manage=&dtml.url_quote-sequence-item;">&dtml-sequence-item;</a>
-          </div>
-        </td>
-        </dtml-in valid_roles>
-      </tr>
-      </dtml-if>
-
-      <dtml-if sequence-odd>
-      <tr class="row-normal">
-      <dtml-else>
-      <tr class="row-hilite">
-      </dtml-if>
+          </td>
+          </dtml-unless>
+          <td></td>
+          <dtml-in valid_roles>
+          <td>
+            <a href="manage_roleForm?role_to_manage=&dtml.url_quote-sequence-item;">
+              &dtml-sequence-item;
+            </a>
+          </td>
+          </dtml-in valid_roles>
+        </tr>
+        </dtml-if>
+      </thead>
 
-        <dtml-unless isTopLevelPrincipiaApplicationObject>
-        <td align="left" valign="top">
-          <input type="checkbox" name="acquire_&dtml-hashed_name;" &dtml-acquire; />
-        </td>
-        </dtml-unless>
-        <td align="left" nowrap>
-          <div class="list-item">
-          <a href="manage_permissionForm?permission_to_manage=&dtml.url_quote-name;">&dtml-name;</a>
-          </div>
-        </td>
-        <dtml-in roles mapping>
-          <td align="center">
-            <input type="checkbox" name="&dtml-name;" &dtml-checked; />
+      <tbody>
+        <tr>
+          <dtml-unless isTopLevelPrincipiaApplicationObject>
+          <td>
+            <input type="checkbox" name="acquire_&dtml-hashed_name;" &dtml-acquire; />
+          </td>
+          </dtml-unless>
+          <td nowrap>
+            <a href="manage_permissionForm?permission_to_manage=&dtml.url_quote-name;">&dtml-name;</a>
           </td>
-        </dtml-in>
-      </tr>
-      </dtml-in permission_settings>
+          <dtml-in roles mapping>
+            <td>
+              <input type="checkbox" name="&dtml-name;" &dtml-checked; />
+            </td>
+          </dtml-in>
+        </tr>
+        </dtml-in permission_settings>
 
-      <tr>
-        <dtml-if isTopLevelPrincipiaApplicationObject>
-        <td colspan="<dtml-var expr="_.len(valid_roles)+1">" align="left">
-        <dtml-else>
-        <td colspan="<dtml-var expr="_.len(valid_roles)+2">" align="left">
-        </dtml-if>
-        <div class="form-element">
-          <input class="form-element" type="submit" name="submit" value="Save Changes" />
-        </div>
-        </td>
-      </tr>
+        <tr>
+          <dtml-if isTopLevelPrincipiaApplicationObject>
+          <td colspan="<dtml-var expr="_.len(valid_roles)+1">">
+          <dtml-else>
+          <td colspan="<dtml-var expr="_.len(valid_roles)+2">">
+          </dtml-if>
+          <input type="submit"
+                 class="btn btn-outline-secondary"
+                 name="submit"
+                 value="Save Changes" />
+          </td>
+        </tr>
+      </tbody>
     </table>
   </form>
 </dtml-with>
 
 <dtml-if "_['id'] != 'acl_users'">
-<p class="form-help" >
+<p>
   You can define new roles by entering a role name and clicking the
   &quot;Add Role&quot; button.
 </p>
 
-<form action="manage_defined_roles" method="post">
-  <table cellpadding="2">
-    <tr>
-      <td align="left" valign="top">
-        <div class="form-label">
-        User defined roles
-      </td>
-      <td align="left" valign="top">
-        &nbsp;
-      </td>
-    </tr>
-    <tr>
-      <td align="left" valign="top">
-        <input type="text" name="role" size="16" value="" />
-      </td>
-      <td align="left" valign="top">
-        <div class="form-element">
-          <input class="form-element" type="submit" name="submit" value="Add Role" />
-        </div>
-      </td>
-    </tr>
-    <dtml-if userdefined_roles>
-    <tr>
-      <td align="left" valign="top">
-        <div class="form-element">
-          <select name="roles:list">
-            <dtml-in userdefined_roles>
-            <option value="&dtml-sequence-item;">&dtml-sequence-item;</option>
-            </dtml-in userdefined_roles>
-          </select>
-        </div>
-      </td>
-      <td align="left" valign="top">
-        <div class="form-element">
-          <input class="form-element" type="submit" name="submit"
+<form action="manage_defined_roles"
+      method="post">
+  User defined roles:
+  <div class="form-group mb-2 form-inline">
+    <input type="text"
+           class="form-control mr-sm-2 col-4"
+           name="role"
+           size="20" />
+    <input type="submit"
+           class="form-control btn btn-outline-info mr-sm-2"
+           name="submit"
+           value="Add Role" />
+  </div>
+  <dtml-if userdefined_roles>
+  <div class="form-group mb-2 form-inline">
+    <select name="roles:list" class="form-control col-4 mr-sm-2" >
+      <dtml-in userdefined_roles>
+        <option value="&dtml-sequence-item;">&dtml-sequence-item;</option>
+      </dtml-in userdefined_roles>
+    </select>
+    <input type="submit"
+           class="btn btn-outline-danger mr-sm-2"
+           name="submit"
            value="Delete Role" />
-        </div>
-      </td>
-    </tr>
-    </dtml-if userdefined_roles>
-  </table>
+  </div>
+  </dtml-if userdefined_roles>
 </form>
 </dtml-if>