This is a simple extension which changes the default behavior of the Categories Module to show all categories and sub-categories in the expanded state, opposed to the default of only showing sub-categories for the selected/clicked category.

This works on the default template, if you have modified your categories module or template this may need modifying. If you need help with this feel free to contact me.

New version added - Compatible with Opencart 3.0.3.7

Changes:
Inline CSS removed.
Upgraded to latest version of Opencart.

Features:
Category module displays child/parent categories.
Adds additional class to top level/child sub categories.
No file overwrites/core mods.

** INSTALLATION**
To install simply upload via the Opencart Extension Installer and refresh your modification cache.

** Notes **
Please see below sample CSS to amend add to your stylesheet.css

.mcat {
background:#219ac8 !important;
text-shadow:none !important;
color:#e4e4e4 !important;
}

.mcat-sel {
background:#219ac8 !important;
text-shadow:none !important;
color:#fff !important;
}