How to change Greeting Message Font and Size

Summary:

Need to change Greeting message font and size

Content (please ensure you mask any confidential information):

Dear Experts,

We have one client requirement on the font and size change in greetings message:

Is there any feasibility to change the greetings message text font?

Thanks,
Jayashree

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

24D

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