diff --git a/typo3/sysext/backend/Resources/Public/JavaScript/FlashMessages.js b/typo3/sysext/backend/Resources/Public/JavaScript/FlashMessages.js
index 9aae5ce26e41753b07293ba3f5e359e161c4f252..0dd3e722becbd2acd999a6645ec717be2b2fed81 100644
--- a/typo3/sysext/backend/Resources/Public/JavaScript/FlashMessages.js
+++ b/typo3/sysext/backend/Resources/Public/JavaScript/FlashMessages.js
@@ -64,7 +64,7 @@ define('TYPO3/CMS/Backend/FlashMessages', ['jquery'], function ($) {
 		}
 		duration = duration || 5;
 		if (!this.messageContainer) {
-			this.messageContainer = $('<div id="msg-div" style="position:absolute;z-index:10000;width: 100%;"></div>').appendTo('body');
+			this.messageContainer = $('<div id="alert-container"></div>').appendTo('body');
 		}
 		$box = $('<div class="alert alert-' + className + ' alert-dismissible fade in" role="alert">' +
 		'<button type="button" class="close" data-dismiss="alert">' +
@@ -75,11 +75,6 @@ define('TYPO3/CMS/Backend/FlashMessages', ['jquery'], function ($) {
 		'<p>' + message + '</p>' +
 		'</div>');
 		$box.appendTo(this.messageContainer);
-		$box.css({
-			width: '400px',
-			position: 'relative',
-			margin: '0 auto 10px auto'
-		});
 		$box.fadeIn().delay(duration * 1000).slideUp();
 	};
 
diff --git a/typo3/sysext/t3skin/Resources/Private/Styles/TYPO3/_element_message.less b/typo3/sysext/t3skin/Resources/Private/Styles/TYPO3/_element_message.less
index 123f57e63c55d330d3dbfebc7f352d3a96c2fd04..0bee7d374a6c5327e5572428921150b8a796314f 100644
--- a/typo3/sysext/t3skin/Resources/Private/Styles/TYPO3/_element_message.less
+++ b/typo3/sysext/t3skin/Resources/Private/Styles/TYPO3/_element_message.less
@@ -11,6 +11,19 @@
  * The TYPO3 project - inspiring people to share!
  */
 
+#alert-container {
+	width: 400px;
+	position: absolute;
+	left: 50%;
+	margin-left: -200px;
+	z-index: 10000;
+
+	.alert {
+		position: relative;
+		margin: 0 auto 10px;
+	}
+}
+
 .alert {
 	border-top: 0;
 	border-right: 0;
diff --git a/typo3/sysext/t3skin/Resources/Public/Css/visual/t3skin.css b/typo3/sysext/t3skin/Resources/Public/Css/visual/t3skin.css
index 0f437df0ceb4371fd6093eec6c919d027e6d66d8..395a99894de62257829ba1dd8dd80d61a5bf49a9 100644
--- a/typo3/sysext/t3skin/Resources/Public/Css/visual/t3skin.css
+++ b/typo3/sysext/t3skin/Resources/Public/Css/visual/t3skin.css
@@ -7225,6 +7225,17 @@ table#typo3-history-item img {
  *
  * The TYPO3 project - inspiring people to share!
  */
+#alert-container {
+  width: 400px;
+  position: absolute;
+  left: 50%;
+  margin-left: -200px;
+  z-index: 10000;
+}
+#alert-container .alert {
+  position: relative;
+  margin: 0 auto 10px;
+}
 .alert {
   border-top: 0;
   border-right: 0;