How to add placeholder text in cart note using Dawn 7.0.1?

Store Design
1

I am using Dawn 7.0.1 and would like to add a placeholder text to the cart note like “eg: Please wrap it as a gift” . What code should I add to the liquid?

Could anyone give me some advice?

Thank you so much.

2

@karen_jackson - it needs to be added via code, can you share your website link?