Add own css in TYPO3 backend - Eigenes CSS ins TYPO3-Backend einfügen

ext_tables.php

/***************
 * Add own stylesheet(s) to TYPO3 backend, tested with TYPO3 8.7
 * Fügt eigene CSS-Dateien zum TYPO3-Backend hinzu; getestet mit TYPO3 8.7
 */
$GLOBALS['TBE_STYLES']['skins']['we_template'] = array();
$GLOBALS['TBE_STYLES']['skins']['we_template']['name'] = 'MyExtension AddOn';
$GLOBALS['TBE_STYLES']['skins']['we_template']['stylesheetDirectories'] = array(
	'EXT:MyExtension/Resources/Public/Stylesheet/Backend'
);