Increasing descriptions's text size of a form field

I am using the OM template. I have added a checkbox to a form. The description field is too small.

See screenshot.

How do I make it larger. How do I reference this field with css? TIA

Can you share link to that page?

Thank you for responding:

Here is link

https://www.hiddenbayfuture.com/survey

7 minutes ago, Steve48 said:

Thank you for responding:

Here is link

https://www.hiddenbayfuture.com/survey

 

add to Home > Design > Custom CSS

.form-wrapper .field-list .description {
    font-size: 20px;
}

Trying to learn how to do this myself.

i used the firefox inspector to reference the caption of the First and Last Name text boxes. I tried to extend your answer to make the caption under first name and last name larger with css below. It didn't work. TIA

see screenshot.

.form-wrapper .field-list .field-control {
    font-size: 20px;
}

and also

 .form-wrapper .field-list .field-control .caption {
    font-size: 20px;
}

@Steve48

.fields.name .caption {
    font-size: 25px !important;
}

or

.form-wrapper .field-list .caption {
    font-size: 25px !important;
}

Thank you tuanphan

That worked