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(Private)Answered by Shadae on August 14, 2015 at 04:38 PM
You can increase the length of your text box from within your form builder.
Select the field that you would like to change the size for, in the properties toolbar, change size to your desired size:
You can also inject custom CSS into your form to change the width of all your text boxes. Please use the following CSS code:
width : 250px;
You can change the pixel to meet your desired size.
Please inform us if you need further assistance.