Not able to hide price books using alternate stylesheet following documentation steps

Summary:

We're integrating OCC and CPQ and we want to hide the Price Book field.

Content (please ensure you mask any confidential information):

We're following this documentation and we're trying to hide Price Book field from model configuration page, however, it's not working, Price Book field is still visible.

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

25D

Code Snippet (add any code snippets that support your topic, if applicable):

.pricebook-container {
display:none;

}