In this tutorial we are going to see how do we use or add override CSS styles in Helix 3 and Helix 2 Joomla template framework. Helix 3 Framework template provided by JoomShaper where there is an one of options tab called 'Custom Code' with 'Custom CSS' field so using it you can esily add Custon CSS style but in Helix 2 Joomla framework we might to add custom css code manually.