Increasing Font Size in a Gravity Form

Hello - at the webpage we use a Gravity Form. In a previous support post we asked how to increase the font size. The CSS we were provided with successfully increased the font size for everything but the interior part of the text field box (the area where a visitor would actually type in their information). We used the CSS code:

#gform_2 {
font-size: 17px;

In the MyCustomCSS plugin. Could you please provide additional CSS to increase font size for the interior, user inputted text field box as well?

Thanks your help is very appreciated!

Kind regards,