How to change forms to white?

How can i change my form completely white with black writing  

See website https://womenincharg3.com/radio-submission/

Please follow the steps below to convert the form to white background and black text:

1. In Form Builder, click the "Form Designer" button.

2. In the Form Designer, change the "Form Color" to white and then the "Font Color" to black.

3. Lastly, you need to insert this custom CSS code:

.supernova {
background-image: none !important;
}

.form-all {
background-image: none !important;
}

.form-textbox, .form-textarea, .form-upload, .form-dropdown, .form-radio-other-input, .form-checkbox-other-input, .form-captcha input, .form-spinner input {
background-color: #ffffff !important;
background-image: none !important;
}

Here's a guide on How-to-Inject-Custom-CSS-Codes. Here's the result: 

Here's a demo form: https://form.jotformpro.com/71246215077958.

Hope that helps. Thank you.