Hello,

Great you have found it!

Don't forget to don't edit the core file to not lose your changes after an update.

2 ways to prevent it :
- if you just change a few css declaration (not php), you can copy/paste the css lines you want to change, and add them at the end of your main site template css file (note that this file can be edited in joomla admin). This way, you don't lose your custom css classes.
- create a custom theme, where you can change all the structure if you want, but needs more skill, and to keep an eye on update changes in official theme pack ( www.icagenda.com/docs/documentation/13-t...e/theme-pack-upgrade )

Hope this could help!

Regards,
Cyril