Could be possible to apply a custom design to a form?

Is it possible to get a custom design that is much cleaner than what is located here? https://form.jotform.com/60375841718158

It is possible to achieve by using CSS, you may let us know which changes do you want to apply to the form, for example, reduce the font size, change the font color, and we will be glad to provide with the needed CSS code to achieve what you want. 

We will be looking for ward to your response.