In this tutorial, see how to create a library of utility classes. Classes can easily be added to your Oxygen elements to achieve a consistent design across your entire site. For example, if you want to use the same box shadow on multiple elements, create a "box-shadow" class and apply it to all of the elements where you want to see a box shadow.
Once you've set up your utility classes, they can easily be imported to another Oxygen site using Oxygen's User Design Library.
To import the utility class design set from the video, use this site key: aHR0cDovL3V0aWxpdHkuZWxpamFobWlsbHMuY29tClV0aWxpdHkgQ2xhc3NlcyBmb3IgT3h5Z2VuCmZtTEhDNEE4Nks4Qg==
Box shadow generator: https://brumm.af/shadows
UI Gradients: https://uigradients.com/