The answer to my question is that it depends on what parameters someone would like to change. All the CSS files are under: "~/var/httpd/htdocs/skins/Customer/default/css/" and then depending on the change you have to locate the appropriate file. Additionally in my case there are CSS files at: "~/KIX4OTRS/var/httpd/htdocs/skins/Customer/default/css" since I have installed the KIX4OTRS module. Regards, G. From: otrs [mailto:otrs-bounces@lists.otrs.org] On Behalf Of Dimitrakakis Georgios Sent: Monday, November 14, 2016 9:03 AM To: User questions and discussions about OTRS. Subject: [otrs] CSS File Hi! Can you tell me from which initial file(s) is created the "CommonCSS_db899691316d0b29d3ffe950e6d42711.css" file in "~/var/httpd/htdocs/skins/Customer/default/css-cache/css" ? I want to change something and make that change persistent! Regards, G. ______________________________________________________________________________ Το περιεχόμενο αυτού του ηλεκτρονικού μηνύματος και τυχόν συνημμένα αρχεία είναι εμπιστευτικά. Απευθύνεται μόνο στους αναφερόμενους παραλήπτες. Αν λάβατε αυτό το μήνυμα εκ παραδρομής, παρακαλείσθε να επικοινωνήσετε αμέσως με τον αποστολέα του μηνύματος ή τον διαχειριστή του συστήματος και να μην αποκαλύψετε σε κανένα το περιεχόμενο. Οι απόψεις που εκφράζονται ανήκουν στον συγγραφέα και δεν εκφράζουν κατ' ανάγκη τις απόψεις της Παγκρήτιας Συνεταιριστικής Τράπεζας. The contents of this email and any attachments are confidential. It is intended for the named recipients only. If you have received this email in error please notify the system administrator or the sender immediately and do not disclose the contents to anyone. Any views or opinions presented are of the author and not necessarily represent those of Pancretan Cooperative Bank