Each Nucleus Card can be further customized beyond the existing Nucleus Card Settings by using custom CSS. This feature is found within the Card Settings window.
To access Card Settings, click the gear icon at the top of the page while in the Nucleus Card Editor.
From here, scroll to the bottom of the settings sidebar to find a window titled 'Custom CSS.' Paste your custom CSS within this window to further customize your Nucleus Cards.
To see a list of helpful CSS codes that you can use on your Nucleus, click here.