How to make text area wider?

When using the designer, 

it requires you to choose a width for both text area and text input.

However, I would like my text area to be the whole width of the form. 

How do I go about doing this? Or is there a way of coding it into the source code I embed into my site?

Hello paulstimber,

If you want to only increase the width of the text area fields and not text box, you will have to inject custom css code in your form.

Please inject the following custom css code in your form to increase the width of text area field:

.form-textarea {

width: 400px !important;

}

The following guide should help you on how to inject custom css code in form:  http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

Hope this helps.

Do get back to us if you have any questions.

Thank you!