TYPO3 v15 dev-main snapshot ()

2026-08-10 22:31:09 +02:00
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+.. include:: /Includes.rst.txt
+
+.. _feature-100232-1679344020:
+
+===============================================================
+Feature: #100232 - Load additional stylesheets in TYPO3 backend
+===============================================================
+
+See :issue:`100232`
+
+Description
+===========
+
+It is now possible to load additional CSS files for the TYPO3
+backend interface via regular :php:`$TYPO3_CONF_VARS` settings in a
+:file:`settings.php` file of a project (previously known as :file:`LocalConfiguration.php`)
+file or in an extension's :file:`ext_localconf.php`.
+
+Previously this was done via the outdated :php:`$TBE_STYLES`
+global array which has been deprecated.
+
+
+Impact
+======
+
+By defining a specific stylesheet, a single CSS file or all CSS files
+of a folder, extension authors can now modify the styling via:
+
+..  code-block:: php
+    :caption: EXT:my_extension/ext_localconf.php
+
+    $GLOBALS['TYPO3_CONF_VARS']['BE']['stylesheets'][my_extension]
+        = 'EXT:myextension/Resources/Public/Css/myfile.css';
+
+    $GLOBALS['TYPO3_CONF_VARS']['BE']['stylesheets'][my_extension]
+        = 'EXT:myextension/Resources/Public/Css/';
+
+in their extension's :file:`ext_localconf.php` file.
+
+Site administrators can handle this in their :php:`settings.php` or :php:`additional.php` file.
+
+.. index:: LocalConfiguration, ext:backend