diff --git a/include/staff/apikey.inc.php b/include/staff/apikey.inc.php
index f88a4ae0e3e73456a927f0c0ef6b9aad368c9cf9..9a39b814f82544ef7ea26bb0b002a9e29b409450 100644
--- a/include/staff/apikey.inc.php
+++ b/include/staff/apikey.inc.php
@@ -114,7 +114,7 @@ $info=Format::htmlchars(($errors && $_POST)?$_POST:$info);
         </tr>
     </tbody>
 </table>
-<p style="padding-left:225px;">
+<p style="text-align:center">
     <input type="submit" name="submit" value="<?php echo $submit_text; ?>">
     <input type="reset"  name="reset"  value="<?php echo __('Reset');?>">
     <input type="button" name="cancel" value="<?php echo __('Cancel');?>" onclick='window.location.href="apikeys.php"'>
diff --git a/include/staff/page.inc.php b/include/staff/page.inc.php
index 4a77dc8be6aad8ce7fcb219565c647df7526565b..609066f86220513ec1d1bbf03e1025c94c70bfae 100644
--- a/include/staff/page.inc.php
+++ b/include/staff/page.inc.php
@@ -190,7 +190,7 @@ else
         </tr>
     </tbody>
 </table>
-<p style="padding-left:225px;">
+<p style="text-align:center">
     <input type="submit" name="submit" value="<?php echo $submit_text; ?>">
     <input type="reset"  name="reset"  value="<?php echo __('Reset'); ?>">
     <input type="button" name="cancel" value="<?php echo __('Cancel'); ?>" onclick='window.location.href="pages.php"'>
diff --git a/include/staff/plugin-add.inc.php b/include/staff/plugin-add.inc.php
index a5aae19d0581e1dce739ef3d05096f7d49028016..ac4bfb375497fa3499cc131f49cb8af92fb3e6c7 100644
--- a/include/staff/plugin-add.inc.php
+++ b/include/staff/plugin-add.inc.php
@@ -17,7 +17,7 @@ foreach ($ost->plugins->allInfos() as $info) {
     if (isset($installed[$info['install_path']]))
         continue;
     ?>
-        <tr><td><button type="submit" name="install_path"
+        <tr><td><button class="button action-button" type="submit" name="install_path"
             value="<?php echo $info['install_path'];
             ?>"><?php echo __('Install'); ?></button></td>
         <td>