The page builder allows for custom Cascading Style Sheet modifications. This is a very powerful feature which allows you to have full control over the layout and presentation of the donation page.
The desired usage of this feature is to provide fine granular control over the page's design and layout. It should be specific to this page and this page only. If you are making the same CSS updates to multiple pages (or all pages) - you should consider using the Global CSS feature.
Next you can head over to the Page Builder, select any page and then click on the "Design" tab.
At the bottom of the design tab is the check box to enable custom CSS. When supplying CSS, please ensure to also include the opening and closing style tags. This CSS will be placed in the <head> section of the page. If you are using Global CSS, Global CSS will be applied to the page before these style tags.
In addition to providing custom CSS in the page builder you can also provide global CSS that will be applied to every page. It is OK to have scripts in both the Global and Page builder locations - so long as they do not conflict with each other.
Global CSS is not applied to the donor portal at this time.