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

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    Why my form is shaking when dropdown selection is changed?

    Asked by rmccoy on April 03, 2016 at 07:23 PM

    Whenever i press preview on form the popups comes up, but it starts shaking erratically. 

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    JotForm Support

    Answered by ashwin_d on April 03, 2016 at 09:07 PM

    Hello rmccoy,

    I'm sorry for the trouble caused to you.

    I did check your form and I am able to see the issue. Does the issue happens when you select the option in first dropdown field? Please check the screenshot below:


    I would suggest you to please inject the following custom css code in your form and that should solve your problem:

    li#id_5 {

        width: 498px !important;


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

    Hope this helps.

    Do get back to us if the issue persists.

    Thank you!