How to increase the width of the matrix input boxes?

If I make the table bigger the boxes remain the same size. if I need to use the matrix boxes for customers to fill out they are unable to read all of what they have typed due to the length of the box.

Hi, thank you for contacting us.

In order to widen the matrix boxes, please inject this custom CSS code:

.form-matrix-values>.form-number-input.form-textbox {

    width: 100% !important;

}

I created an animation for you to guide you through achieving that:

 

 

For a general guide on how to inject custom CSS codes into a form, please see https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

I also created a corrected form in case you would like to clone it: https://form.jotform.com/70085315511952

If you need further assistance please let us know. We will be happy to help. Thank you.

I do not the inject CSS in my design view
Sent from my iPhone
...

I see, I created a new animation to guide you through achieving that with your design view:

 

Please let me know if you need further assistance with this. Thank you.