Content area text. This text is set by default in the site settings but can be adjusted by using the tools at the top of this page.
Format > Sub-heading (H3)
Bulleted list style is automatically set by Google sites and created by using the toolbar at the top of the page.
Add more bulleted items by hitting enter or return on the keyboard.
To add more text after a bulleted list, simply hit enter/return after last bullet and undo the bulleted list at the top of the page.
Format > Minor heading (H4) -- you can customize the color (changed from default to red), size, etc.
As is the case with many of the other items on this page, the text can be customized. You can change the size, color and a limited choice of fonts. It is recommended that you keep the font as the default, though. This will maintain a nice clean look to your site.