Want text to become bold after a checkmark is placed in the box next to it

Want text to become bold after a checkmark is placed in the box next to it

I have a list of things in a web form. Each item on the list has a
checkbox next to it. Some of the checkboxes have checkmarks already in
them, and others are empty.
I want the text next to the checkbox to turn bold whenever there is a
check in the box.
So the text that already has a checkmark in the box next to them by
default should appear bold on load.
Item text that has an empty checkbox next to them should turn bold the
moment I place a checkmark in it.
How do I do this?