What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    When using a matrix with a text input field, how can you adjust the size of the users text input?

    Asked by johneff on September 03, 2015 at 01:28 PM


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    Answered by victor on September 03, 2015 at 03:50 PM


    To adjust the text box in the matrix, you may inject the following CSS code:


    .form-matrix-values .form-textbox {

      width: 200px;



    Please let us know if this helps.


    Victor M Larrea

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    Answered by johneff on September 03, 2015 at 04:39 PM


    That did the trick.

    BTW: Where can I find the list CSS class identifiers used in JotForm?

    I tried going to the FireBug site and getting the list, but couldn't locate


    Best Regards,


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    Answered by Boris on September 03, 2015 at 10:03 PM

    On behalf of my colleague, you are kindly welcome. :)

    I'm afraid that we do not have any comprehensive list of classes used in JotForm forms.

    In most modern browsers, you can generally see the class of any element by right-clicking on it, and selecting Inspect Element from the menu that opens.

    I hope this helps, John. Please don't hesitate to open a new thread for any other issues or assistance you may need with your forms, we will be happy to help.