Welcome to the Shopify community!
and Thanks for your Good question.
Please share your site URL,
So I will check and provide a solution here.
My website isn't open yet. Can you provide the code for "signature" here?
The only problem is that I need to add the font which is different than the other text.
If you can provide some code (or variations) I can test and learn myself.
how can i guide your without URL sorry