Changing width of text boxes does not work

I have changed the sixe of the complaints text box several times but it does not change.

http://form.jotformpro.com/form/51414187190957

Hi,

You can inject CSS code to text box width. Here's sample code: 

.form-textbox {

max-width: 100%;

}

[data-type='control_textbox'] .form-input, 

[data-type='control_textarea'] .form-input {

/* Change this value */

max-width: 300px;

}