diff --git a/admin/themes/clear/theme.css b/admin/themes/clear/theme.css
index 8bf0fe34f..225b984b5 100644
--- a/admin/themes/clear/theme.css
+++ b/admin/themes/clear/theme.css
@@ -291,7 +291,7 @@ UL.thumbnails li.rank-of-image {background-color: #ddd;}
   font-size:14px;
 }
 
-.buttonLike:disabled, .buttonGradient:disabled, input[type="submit"]:disabled, input[type="button"]:disabled, input[type="reset"]:disabled {
+.buttonLike:disabled, input[type="submit"]:disabled, input[type="button"]:disabled, input[type="reset"]:disabled {
   background: #ECECEC !important;
   color: #D5D5D5 !important;
   cursor: not-allowed;
diff --git a/admin/themes/default/css/components/general.css b/admin/themes/default/css/components/general.css
index da394af4b..b3ff53920 100644
--- a/admin/themes/default/css/components/general.css
+++ b/admin/themes/default/css/components/general.css
@@ -41,6 +41,7 @@ or
     background: #ff7700;
     text-decoration: none !important;
     color: white;
+    transition: all 125ms ease-out;
 }
 
 .head-button-2 {
diff --git a/admin/themes/default/template/photos_add_applications.tpl b/admin/themes/default/template/photos_add_applications.tpl
index 2caa7b24b..90e676c18 100644
--- a/admin/themes/default/template/photos_add_applications.tpl
+++ b/admin/themes/default/template/photos_add_applications.tpl
@@ -77,7 +77,7 @@ jQuery().ready(function(){
       <div class="applicationName"> Piwigo Remote Sync </div> 
       <div class="applicationDesc"> {'Piwigo Remote Sync is able to upload a whole folder hierarchy. If you run it again, only new photos will be uploaded.'|@translate} </div> 
       <div class="applicationLink">
-        <a class="buttonGradient" href="http://piwigo.org/ext/extension_view.php?eid=851" target="_blank">{'Learn more'|@translate}</a>
+        <a class="buttonLike" href="http://piwigo.org/ext/extension_view.php?eid=851" target="_blank">{'Learn more'|@translate}</a>
       </div> 
     </div>
   </div>
@@ -89,7 +89,7 @@ jQuery().ready(function(){
       <div class="applicationName"> {'Piwigo for iOS (iPhone, iPad, iPod Touch)'|@translate}</div> 
       <div class="applicationDesc"> {'<em>Piwigo for iOS</em> application empowers you to connect to your Piwigo gallery from your iPhone, iPad or iPod Touch, create some albums and upload several photos at once.'|@translate}</div> 
       <div class="applicationLink">
-        <a class="buttonGradient" target="_blank" href="http://itunes.apple.com/us/app/piwigo/id472225196"> {'Available on'|@translate} Apple AppStore</a>
+        <a class="buttonLike" target="_blank" href="http://itunes.apple.com/us/app/piwigo/id472225196"> {'Available on'|@translate} Apple AppStore</a>
       </div> 
     </div>
   </div>
@@ -101,7 +101,7 @@ jQuery().ready(function(){
       <div class="applicationName"> {'Piwigo for Android'|@translate} </div> 
       <div class="applicationDesc"> {'<em>Piwigo for Android</em> application empowers you to connect your Android phone or table to your Piwigo gallery, create some albums and upload several photos at once.'|@translate} </div> 
       <div class="applicationLink">
-        <a class="buttonGradient" target="_blank" href="https://play.google.com/store/apps/details?id=com.piwigo.piwigo_ng">{'Available on'|@translate} Google Play</a> 
+        <a class="buttonLike" target="_blank" href="https://play.google.com/store/apps/details?id=com.piwigo.piwigo_ng">{'Available on'|@translate} Google Play</a> 
       </div>
     </div>
   </div>
@@ -116,7 +116,7 @@ jQuery().ready(function(){
         {'The Piwigo publish Plug-in allows you to export and synchronize photos from Lightroom directly to your Piwigo photo gallery.'|@translate} 
       </div> 
       <div class="applicationLink">
-        <a class="buttonGradient" target="_blank" href="http://alloyphoto.com/plugins/piwigo/">{'Available on'|@translate} alloyphoto.com</a>
+        <a class="buttonLike" target="_blank" href="http://alloyphoto.com/plugins/piwigo/">{'Available on'|@translate} alloyphoto.com</a>
       </div>
     </div>
   </div>
@@ -128,7 +128,7 @@ jQuery().ready(function(){
       <div class="applicationName"> Shotwell </div> 
       <div class="applicationDesc"> {'Shotwell is an open source digital photo organizer that runs on Linux. It is the default photo manager in Ubuntu and Fedora.'|@translate}</div> 
       <div class="applicationLink">
-        <a title="{'On your Linux, simply install Shotwell with your package manager and the activate Piwigo publishing option.'|@translate}" class="buttonGradient" href="http://yorba.org/shotwell/" target="_blank">{'Learn more'|@translate}</a>
+        <a title="{'On your Linux, simply install Shotwell with your package manager and the activate Piwigo publishing option.'|@translate}" class="buttonLike" href="http://yorba.org/shotwell/" target="_blank">{'Learn more'|@translate}</a>
       </div>
     </div>
   </div>
@@ -143,7 +143,7 @@ jQuery().ready(function(){
         {'digiKam is designed for photographers who want to view, manage, edit, enhance, organize, tag, and share photographs.'|@translate}
       </div> 
       <div class="applicationLink">
-        <a title="{'To export your photos from digiKam to Piwigo, simply install digiKam and the Kipi-plugins.'|@translate}" class="buttonGradient" href="http://digikam.org/" target="_blank">{'Learn more'|@translate}</a>
+        <a title="{'To export your photos from digiKam to Piwigo, simply install digiKam and the Kipi-plugins.'|@translate}" class="buttonLike" href="http://digikam.org/" target="_blank">{'Learn more'|@translate}</a>
       </div>
     </div>
   </div>
@@ -155,7 +155,7 @@ jQuery().ready(function(){
       <div class="applicationName"> MacShareToPiwigo </div> 
       <div class="applicationDesc"> {'Share / Send your photos directly from your Mac Os X (10.10 and following) to Piwigo'|@translate} </div> 
       <div class="applicationLink">
-        <a class="buttonGradient" target="_blank" href="http://piwigo.org/ext/extension_view.php?eid=804">{'Learn more'|@translate}</a>
+        <a class="buttonLike" target="_blank" href="http://piwigo.org/ext/extension_view.php?eid=804">{'Learn more'|@translate}</a>
       </div>
     </div>
   </div>
@@ -167,7 +167,7 @@ jQuery().ready(function(){
       <div class="applicationName"> iPhoto </div> 
       <div class="applicationDesc"> {'iPhoto is the default photo manager on MacOSX. The Piwigo export plugin let you create new albums and export your photos directly from iPhoto to your Piwigo photo gallery.'|@translate} </div> 
       <div class="applicationLink">
-        <a class="buttonGradient" target="_blank" href="http://piwigo.org/ext/extension_view.php?eid=592">{'Learn more'|@translate}</a>
+        <a class="buttonLike" target="_blank" href="http://piwigo.org/ext/extension_view.php?eid=592">{'Learn more'|@translate}</a>
       </div>
     </div>
   </div>
@@ -183,7 +183,7 @@ jQuery().ready(function(){
         {'The Piwigo export plugin allows you to create albums and export photos.'|@translate}
       </div> 
       <div class="applicationLink">
-        <a class="buttonGradient" target="_blank" href="http://piwigo.org/ext/extension_view.php?eid=598">{'Learn more'|@translate}</a>
+        <a class="buttonLike" target="_blank" href="http://piwigo.org/ext/extension_view.php?eid=598">{'Learn more'|@translate}</a>
       </div>
     </div>
   </div>
diff --git a/admin/themes/default/template/photos_add_direct.tpl b/admin/themes/default/template/photos_add_direct.tpl
index 7c7de60c5..df12e8a01 100644
--- a/admin/themes/default/template/photos_add_direct.tpl
+++ b/admin/themes/default/template/photos_add_direct.tpl
@@ -168,7 +168,7 @@ jQuery(document).ready(function(){
       QueueChanged : function(up) {
         jQuery('#addFiles').addClass("addFilesButtonChanged");
         jQuery('#startUpload').prop('disabled', up.files.length == 0);
-        jQuery("#addFiles").removeClass('buttonGradient').addClass('buttonLike');
+        jQuery("#addFiles").removeClass('buttonLike').addClass('buttonLike');
 
         if (up.files.length > 0) {
           jQuery('.plupload_filelist_footer').show();
@@ -177,7 +177,7 @@ jQuery(document).ready(function(){
 
         if (up.files.length == 0) {
           jQuery('#addFiles').removeClass("addFilesButtonChanged");
-          jQuery("#addFiles").removeClass('buttonLike').addClass('buttonGradient');
+          jQuery("#addFiles").removeClass('buttonLike').addClass('buttonLike');
           jQuery('.plupload_filelist_footer').hide();
           jQuery('.plupload_filelist').css("overflow-y", "hidden");
         }
@@ -507,7 +507,7 @@ jQuery(document).ready(function(){
     <fieldset class="selectFiles">
       <legend><span class="icon-file-image icon-yellow"></span>{'Select files'|@translate}</legend>
       <div class="selectFilesButtonBlock">
-        <button id="addFiles" class="buttonGradient">{if not $DISPLAY_FORMATS}{'Add Photos'|translate}{else}{'Add formats'|@translate}{/if}<i class="icon-plus-circled"></i></button>
+        <button id="addFiles" class="buttonLike">{if not $DISPLAY_FORMATS}{'Add Photos'|translate}{else}{'Add formats'|@translate}{/if}<i class="icon-plus-circled"></i></button>
         <div class="selectFilesinfo">
           {if isset($original_resize_maxheight)}
           <p class="uploadInfo">{'The picture dimensions will be reduced to %dx%d pixels.'|@translate:$original_resize_maxwidth:$original_resize_maxheight}</p>
@@ -540,7 +540,7 @@ jQuery(document).ready(function(){
       <button id="cancelUpload" class="buttonLike icon-cancel-circled">{'Cancel'|translate}</button>
     </div>
 
-    <button id="startUpload" class="buttonGradient icon-upload" disabled>{'Start Upload'|translate}</button>
+    <button id="startUpload" class="buttonLike icon-upload" disabled>{'Start Upload'|translate}</button>
 
   </form>
 
diff --git a/admin/themes/default/template/site_update.tpl b/admin/themes/default/template/site_update.tpl
index 16e3eacd0..9bdeb0283 100644
--- a/admin/themes/default/template/site_update.tpl
+++ b/admin/themes/default/template/site_update.tpl
@@ -114,7 +114,7 @@ $('#syncFiles label').click(function () {
   </fieldset>
 
   <p class="bottomButtons syncBtn">
-    <button class="icon-exchange buttonGradient" type="submit" value="" name="submit"> {'Synchronize'|@translate} </button>
+    <button class="icon-exchange buttonLike" type="submit" value="" name="submit"> {'Synchronize'|@translate} </button>
   </p>
 </form>
 {/if}{*isset $introduction*}
diff --git a/admin/themes/default/theme.css b/admin/themes/default/theme.css
index 3ce3fe78f..6be075c45 100644
--- a/admin/themes/default/theme.css
+++ b/admin/themes/default/theme.css
@@ -2188,10 +2188,10 @@ margin-top:4px; padding-bottom:3px; padding-top:3px; top:1px;
 }
 
 .themeActions a:nth-child(1) {background-color: #ffc17e; color: #222;}
-.themeActions a:nth-child(1):hover {background-color: #ff7700; color: white; text-decoration: none;}
+.themeActions a:nth-child(1):hover {background-color: #ff7700; color: white; text-decoration: none; transition-duration: 125ms;}
 
 .themeActions a:nth-child(2) {background-color: #ececec; color: #222;}
-.themeActions a:nth-child(2):hover {background-color: #ff9b32; color: #111; text-decoration: none;}
+.themeActions a:nth-child(2):hover {background-color: #ff9b32; color: #111; text-decoration: none; transition-duration: 125ms;}
 
 #themesContent H3 {font-size:16px; text-align:left; border-bottom:1px solid #444; letter-spacing:1px; margin:5px;}
 .themeBoxes {min-height:0;text-align:left;}
@@ -6020,25 +6020,10 @@ fieldset#environment legend i[class*="icon-"] {
   }
 }
 
-.buttonLike, .buttonGradient, input[type="submit"], input[type="button"], input[type="reset"] {
+.buttonLike, input[type="submit"], input[type="button"], input[type="reset"] {
  font-size:12px; border:none; padding:13px 20px; margin-left:0; font-weight: bold; transition: all 125ms ease-out;
 }
 
-.buttonGradient {
-  padding: 8px 10px;
-  margin-left: 5px;
-  background: linear-gradient(135deg, rgb(255, 119, 0) 0%, rgb(249, 76, 93) 25%, rgb(201, 74, 140) 50%, rgb(249, 76, 93) 100%);  transition: 0.3s ease; 
-  cursor: pointer;
-  color: white !important;
-  background-size: 200% 100%;
-}
-
-.syncBtn .buttonGradient {
-  padding:13px 20px;
-}
-
-.buttonGradient:hover {background-position-x: 100%;}
-
 #cboxLoadedContent input[type="submit"] {margin-bottom: 20px; float: none;}
 
 #permissions, #uploadForm fieldset {border: 0;}
diff --git a/admin/themes/roma/theme.css b/admin/themes/roma/theme.css
index 1172558f2..17f3b921e 100644
--- a/admin/themes/roma/theme.css
+++ b/admin/themes/roma/theme.css
@@ -1838,13 +1838,6 @@ li.plupload_delete a:hover {background: url("images/cancelhover.svg")!important;
   border-left: 2px solid #a9f6e3;
 }
 
-.buttonGradient:disabled {
-  padding: 8px 10px; margin-left: 5px;
-  background-size: 200% 100%;
-  background: #5d5d5d !important;
-  color: #373737 !important;
-  cursor: not-allowed;
-}
 
 .linked-albums-badge {
   background: #777;