diff --git a/module/install/view/index.html.php b/module/install/view/index.html.php
index f2bdb45b07..57f3f1c3eb 100644
--- a/module/install/view/index.html.php
+++ b/module/install/view/index.html.php
@@ -60,7 +60,7 @@
     </div>
     <div class='modal-footer'>
       <div class='form-group'>
-        <?php echo html::a(inlink('license'), $lang->install->start, '', "class='btn btn-primary'");?>
+        <?php echo html::a(inlink('license'), $lang->install->start, '', "class='btn btn-wide btn-primary'");?>
       </div>
     </div>
   </div>
diff --git a/module/install/view/license.html.php b/module/install/view/license.html.php
index 8dc756cda0..28e7f61e88 100644
--- a/module/install/view/license.html.php
+++ b/module/install/view/license.html.php
@@ -22,7 +22,7 @@
       </div>
     </div>
     <div class='modal-footer'>
-      <?php echo html::a(inlink('step1'), $lang->install->next, '', "class='btn btn-primary btn-install'");?>
+      <?php echo html::a(inlink('step1'), $lang->install->next, '', "class='btn btn-primary btn-install btn-wide'");?>
     </div>
   </div>
 </div>
diff --git a/module/install/view/step1.html.php b/module/install/view/step1.html.php
index 2025f53cce..bfabf7ea89 100644
--- a/module/install/view/step1.html.php
+++ b/module/install/view/step1.html.php
@@ -160,11 +160,11 @@
          $filterResult   == 'ok' and
          $iconvResult    == 'ok')
       {
-          echo html::a($this->createLink('install', 'step2'), $lang->install->next, '', "class='btn btn-primary'");
+          echo html::a($this->createLink('install', 'step2'), $lang->install->next, '', "class='btn btn-wide btn-primary'");
       }
       else
       {
-          echo html::a($this->createLink('install', 'step1'), $lang->install->reload, '', "class='btn btn-primary mgb-20'");
+          echo html::a($this->createLink('install', 'step1'), $lang->install->reload, '', "class='btn btn-wide btn-primary mgb-20'");
           if($pdoResult == 'fail' or $pdoMySQLResult == 'fail')
           {
             echo '<div class="panel panel-sm text-left"><div class="panel-heading strong">' . $lang->install->phpINI . '</div><div class="panel-body">' . nl2br($this->install->getIniInfo()) . '</div></div>';
diff --git a/module/install/view/step3.html.php b/module/install/view/step3.html.php
index a331f494e3..0240036b86 100644
--- a/module/install/view/step3.html.php
+++ b/module/install/view/step3.html.php
@@ -76,7 +76,7 @@ EOT;
         ?>
       </div>
     </div>
-    <div class='modal-footer'><?php echo html::a($this->createLink('install', 'step4'), $lang->install->next, '', "class='btn btn-primary'");?></div>
+    <div class='modal-footer'><?php echo html::a($this->createLink('install', 'step4'), $lang->install->next, '', "class='btn btn-wide btn-primary'");?></div>
   <?php endif;?>
   </div>
 </div>
diff --git a/module/install/view/step5.html.php b/module/install/view/step5.html.php
index 06b94f53e0..150486533f 100644
--- a/module/install/view/step5.html.php
+++ b/module/install/view/step5.html.php
@@ -23,9 +23,9 @@
     </div>
     <div class='modal-footer'>
       <?php 
-      echo html::a($lang->install->officeDomain, $lang->install->register, '_blank', "class='btn btn-success'");
+      echo html::a($lang->install->officeDomain, $lang->install->register, '_blank', "class='btn btn-wide btn-success'");
       echo "<span class='text-muted'> &nbsp; " . $lang->install->or . ' &nbsp; </span>';
-      echo html::a('index.php', $lang->install->login, '', "class='btn btn-primary'");
+      echo html::a('index.php', $lang->install->login, '', "class='btn bin-wide btn-primary'");
       ?>
     </div>
   </div>
diff --git a/module/upgrade/view/backup.html.php b/module/upgrade/view/backup.html.php
index b31d9d41c7..7cb039e165 100644
--- a/module/upgrade/view/backup.html.php
+++ b/module/upgrade/view/backup.html.php
@@ -20,7 +20,7 @@
         <div class='content'><?php echo $lang->upgrade->warnningContent;?></div>
       </div>
     </div>
-    <div class='modal-footer'><?php echo html::linkButton($lang->upgrade->common, inlink('consistency'), 'self', '', 'btn disabled btn-primary');?></div>
+    <div class='modal-footer'><?php echo html::linkButton($lang->upgrade->common, inlink('consistency'), 'self', '', 'btn btn-wide disabled btn-primary');?></div>
   </div>
 </div>
 <?php include '../../common/view/footer.lite.html.php';?>
diff --git a/module/upgrade/view/checkextension.html.php b/module/upgrade/view/checkextension.html.php
index 212ca100a2..7236fa23ed 100644
--- a/module/upgrade/view/checkextension.html.php
+++ b/module/upgrade/view/checkextension.html.php
@@ -20,7 +20,7 @@
       <div class='modal-body'>
       <?php echo $data;?>
       </div>
-      <div class='modal-footer'><?php echo html::a(inlink('selectVersion'), $this->lang->upgrade->continue, '', "class='btn'");?></div>
+      <div class='modal-footer'><?php echo html::a(inlink('selectVersion'), $this->lang->upgrade->continue, '', "class='btn btn-wide'");?></div>
     </div>
   </form>
 </div>
diff --git a/module/upgrade/view/consistency.html.php b/module/upgrade/view/consistency.html.php
index 8f04a258fc..9cd1b43527 100644
--- a/module/upgrade/view/consistency.html.php
+++ b/module/upgrade/view/consistency.html.php
@@ -24,7 +24,7 @@
           <?php echo nl2br($alterSQL);?>
         </p>
       </div>
-      <div class='modal-footer'><?php echo html::a('#', $this->lang->refresh, '', "class='btn' onclick='location.reload()'");?></div>
+      <div class='modal-footer'><?php echo html::a('#', $this->lang->refresh, '', "class='btn btn-wide' onclick='location.reload()'");?></div>
     </div>
   </form>
 </div>
diff --git a/module/upgrade/view/license.html.php b/module/upgrade/view/license.html.php
index 3f15c69f0f..d6927f692d 100644
--- a/module/upgrade/view/license.html.php
+++ b/module/upgrade/view/license.html.php
@@ -22,7 +22,7 @@
       </div>
     </div>
     <div class='modal-footer'>
-      <?php echo html::a(inlink('license', 'agree=true'), $lang->confirm, '', "class='btn btn-primary btn-install'");?>
+      <?php echo html::a(inlink('license', 'agree=true'), $lang->confirm, '', "class='btn btn-wide btn-primary btn-install'");?>
     </div>
   </div>
 </div>