The changes to my theme in 123FormBuilder don’t work in Wix. What to do?

The changes to my theme in 123FormBuilder don’t work in Wix. What to do?

Customized themes from your 123FormBuilder account do not automatically apply on Wix. To apply one of your themes on Wix follow the steps below.

1. In the Editor section of your Wix page, right-click on your form and select App Settings.

2. Make sure you are logged in your 123FormBuilder account or hit Connect Account, in the popup window.

3. Return to the 123FormBuilder popup window.

4. Go to Choose Theme and click on the arrow on the left side of the theme’s name. This will open the themes menu on the right where you can select your theme or create a new one.

To save yourself the time and energy, customize your theme directly in Wix from now on. It’s easier this way. And do not forget to save your Wix page before exiting the editor.


  1. Luigino says:

    I have your contact form embedded in my WIX page, It works fine, I can change everything but the Font and Field Size. I followed the instructions on your page, but the changes are not being reflected in the form.

    I would like a Bigger Fields and bigger font, but I just can’t do it

    Please Help,

    • Hello Luigino!

      Are you referring to the font and field size of the label or the text input (what others fill in)? To change the size of a form field (if it’s with input), simply go to the Form Editor, click on the field and select the Field Size option on the left. Change the value to whatever suits your needs best. This will change the width of the field. If you want to change the height of the field, use Inspect Element from your browser to retrieve the input ID of the form field (e.g. id123-control321341412). Next, go to the Settings → Themes section of your form and hit the link Use custom CSS. Next, enter this code: #id123-control11111111 {height:18px;} . The id is the one retrieved through Inspect Element and the value 18px is the desired size in pixels of the input box for the field.

      If you want to change the size and font of the label text, as well as the instructions, go to SettingsThemesText and use the input boxes and dropdown to adjust the size and the font of your text. Don’t forget to save all changes before leaving the section.

      If you require further assistance, maybe a demonstration of the above, please don’t hesitate to contact our support specialists at


  2. Anastacia says:

    Hello, please, help me! I can’t change theme of my form anywhere! I have a site on WIX. If a try to do this in your site “123formbuilder” – it is not updated. If I try to do this in my site-editor “wix” – i push the dropdown list “Select a color scheme” – i cant confirm selected theme. I can give screenshotes of my problem, but don’t know where i can do this.
    Wery hope for a quick help, your loyal user, Anastasia!!

    • Hello Anastacia!

      Please send the screenshots to our Support Team at and specify the steps you have followed to apply your desired theme to the online form. Also, detail the operating system you are using, device and Internet browser.

      Our Support Team is also available on Live Chat, from Monday to Friday between 9 AM – 5 PM (GMT+2).


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