Joomla! 4 is completely redesigned, rethought, and has new features. Joomla 4 Templates
VIII Custom CSS and JavaScript (advanced)
To access the Sparky’s template options and open the Custom tab, do the following:
Login to your Joomla Administration panel.
Go to Extensions > Templates > sparky_framework > Custom (Joomla 3.x) or System > Templates > Site Template Styles > sparky_framework > Custom (Joomla 4.x).
If you know how to code CSS and/or JavaScript, you can write your custom code here. The panes where you enter your code are simplified code editors with line numbers. CSS and JavaScript code that you are entering in these panes will be colored, similarly to the popular code editors.
If you prefer to write CSS and JavaScript code in your favorite code editor and then upload files by FTP, that’s also possible in the Sparky Framework.
