Question
As a Provider, I want to customize the online store - edit CSS, put own images, include JavaScript. How to do it properly?
Resolution
Follow the general recommendation from the documentation:
for PBA 5.4 - Online Store guide, Online Store Customization guide
for PBA 5.5 - Online Store guide, Online Store Customization guide
Pay attention to the chapters "Setting Custom CSS", "Including JavaScript Code", "Adding Custom Images".
Do not make any modifications on the store server file-system directly as all the changes will be overwritten with the default settings indicated in the control panel on the store synchronization and with the product update installation.