Capitalize

My understanding is that you want to force the data entered in the fields to be capitalized or uppercase. If that is correct, please use the CSS code below:

Capitalize the first letter of each word:

.form-textbox {
text-transform: capitalize;
}

Here's the result:

Make all letters in uppercase format

.form-textbox {
text-transform: uppercase;
}

Here's the result:

Here's a guide on How-to-Inject-Custom-CSS-Codes.

Hope that helps. Thank you.