hover effects

Summary:

how to add the hover-effects provided by Oracle in the career site

Content (please ensure you mask any confidential information):

Hello, I need some help for the use of hover effects on buttons on the career site. The options are two: add the button and modify the CSS or create an HTML object with. In both cases, copying-pasting the code from this document nothing happens and the button I want to modify stays the same.

Do you know how can I modify the button adding a hover effect?

Thank you

Version (include the version you are using, if applicable):