Features of the Wright Framework for Joomla
You can easily customize your CSS files without alterting the core files, and have them load automatically.
Inside of the css folder, you will see a few css files. Any file that starts with style-***.css is one of the template styles. These are automatically loaded based on the theme you select.
In order to add your CSS customizations, create a new file and name it custom.css. Here you can safely add your customizations to affect the template's design.
This video shows you how to safely customize CSS in Wright: