Images Checkboxes Widget: Why some images at the bottom are not being displayed?

I've just noticed that sometimes the images are missing below the fold line.

And despite the fact that I've changed .myjotform.com' to 'instanzia.com', the form still opens revealing:

https://form.myjotform.com/61234819807561

in the browser

I think this is because you have added some custom CSS to change the layout of the fields in the widget and then the height is not being set properly although you have added this CSS code to change the height of the widget: 

iframe#customFieldFrame_34 {

    margin-left : 0px;

    margin-top : 0px;

    height : 2600px!important;

}

This is not the ID of the iFrame where the widget is being loaded, instead of using that code try using this one: 

iframe#customFieldFrame_3 {

    margin-left : 0px;

    margin-top : 0px;

    height : 2600px!important;

}

You may easily get the correct id of the widget by left clicking on the element of the widget and then clicking on the option inspect element: 

Once there you will be able to get the correct ID of the element: 

Here is my cloned form where I did applied the same CSS code and it is showing all the images now: https://jotform.com/61238646707966. 

Hope this helps. 

Thanks Ken_G. You guys know your 'stuff'.

Nzia