7.1.5111 Form Textbox not taking css
I am not sure if I am missing something but I somehow got the feeling the if you set a css class in a textbox with the formbuilder this class is not spit out in HTML.
this CSS class is applied for the whole textbox control. Please check the attached video that I have recorded for demonstration. As far as I can see from your video this behavior is just the same on your end.
100% my bad. Thanks for clearing it up for me.