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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You won't necessarily need CSS to build forms with JotForm. All you need to do is drag and drop the fields on your form and design it using our Form Builder.
Related guide: What-is-a-Form-Builder
The only time you would need to inject your own CSS codes is IF and ONLY IF you wanted to customize something a little further, but that's optional.
In case we misunderstood your question though, don't hesitate to get back to us.
Oh sorry. My English is bad and maybe I had mispronounced.
I want to customize all the CSS of the form, but many default styles ( 'nova.css' theme for example) create an exhaustive work for me.
I'm looking for a raw version of the form, without CSS style (just the basics as the float, or not) for my own CSS in an easier way.
TY for reply.
The first step when you have started to create your form with fields without any theme was the raw version of your form.
For example, I have checked your form named "Radio 90 FM - Contato" and I have seen that you have injected a lot of CSS codes as the following screenshot:
If you delete all of the injected CSS codes, you will have the first version of the form as the following link : https://form.jotform.com/63282376710961
Please check and if you need further assistance, let us know.