There are many styles which you can apply to your site. You can browse the different options at Settings > Customize Styles but at a high level we can change things like colors, fonts, and backgrounds (colors and images) in addition to various layout options.
In order to get started quickly, we ask that you provide a primary and secondary color to work with, any custom fonts you’d like to use (we can support any fonts from Google Fonts out of the box, please contact us to inquire whether we can support other fonts) as well as any specific Homepage or General Layout Settings you’d like us to apply to your site.
Please see the Welcome Packet for more details.
While you are considering the design elements for your site, here are a few sites you can look at it for inspiration.