How to develop my custom CSS code?

Hi,

I see that there is an option for creating custom CSS on forms. Is there some type of CSS database where I can see the code for different elements of a form?

Thank you!

To customize elements with your own CSS code you only need their ID, the code will depend on how you want to customize your elements or form. 

First, you need to get the element ID, you may refer to this guide to find the ID: https://www.jotform.com/help/146-How-to-Find-Field-IDs-and-Names 

Or you may also inspect the element using the developer tools to find the IDs or classes, this guide will help you doing so: https://www.lifewire.com/get-inspect-element-tool-for-browser-756549 

Now, you may refer to this guide in order to find more details about how to start developing your CSS code: https://www.w3schools.com/css/css_intro.asp