The simple donation page designer builds the page for you in set order. You can change the colors, fonts, and a few other options using the Style Donation Page tab. The Body, Header, Title, Subtitle, Label, and Error Message tabs allow you to make your selections. The list of built in themes available are shown in the dropdown under Style Preview.
If you prefer to have more control over the way your donation page looks, the Advanced Page Designer provides more options for the layout and look of the page. You can learn more about the Advanced Page Designer in this article: https://support.associationsphere.com/en/support/solutions/articles/67000736461-using-the-advanced-donation-page-designer
