Increase the font size of user responses in the form

The text (part numbers, Qty, etc) that customers type into form fields is a tiny font.  How can I make it larger?

You can use Form Designer:

And then increase font size under Font Options:

You can test the demo form:

http://form.jotformpro.com/form/42886051398970? 

Let us know if we can assist you further.

1) that only changed the font of the Label - NOT the customer input text

2) changing the font from 12 to 14 stretched every field right off the page, and setting it back to 12 did NOT correct it

TINY TEXT

Here's what hapened when font was changed from 12 to 14

Another way to do is to change the font-size from CSS.

So, here is a form I increase the text size:

http://www.jotform.com/form/42875920496972

To do that, I clicked on the CSS tab on the Form Designer and then clicked on the textbox field and entered this:

.form-textbox {

    font-size : 30px;

}