diff --git a/htdocs/core/tpl/login.tpl.php b/htdocs/core/tpl/login.tpl.php
index 7f97e751ded..4900acc9ec2 100644
--- a/htdocs/core/tpl/login.tpl.php
+++ b/htdocs/core/tpl/login.tpl.php
@@ -133,9 +133,15 @@ $(document).ready(function () {
 </script>
 <?php } ?>
 
-<div class="login_center center"<?php print empty($conf->global->MAIN_LOGIN_BACKGROUND) ? ' style="background-size: cover; background-position: center center; background-attachment: fixed; background-repeat: no-repeat; background-image: linear-gradient(rgb('.$colorbackhmenu1.',0.3), rgb(240,240,240));"' : '' ?>>
+<div class="login_center center"<?php
+$backstyle = 'background: linear-gradient('.($conf->browser->layout == 'phone' ? '0deg' : '4deg').', rgb(240,240,240) 52%, rgb('.$colorbackhmenu1.') 52.1%);';
+// old style:  $backstyle = 'background-image: linear-gradient(rgb('.$colorbackhmenu1.',0.3), rgb(240,240,240));';
+$backstyle = getDolGlobalString('MAIN_LOGIN_BACKGROUND_STYLE', $backstyle);
+print empty($conf->global->MAIN_LOGIN_BACKGROUND) ? ' style="background-size: cover; background-position: center center; background-attachment: fixed; background-repeat: no-repeat; '.$backstyle.'"' : '';
+?>>
 <div class="login_vertical_align">
 
+
 <form id="login" name="login" method="post" action="<?php echo $php_self; ?>">
 
 <input type="hidden" name="token" value="<?php echo newToken(); ?>" />