With the page builder you can edit any element on any page of your site.
There are three kinds of elements that can be added to pages: sections, components and blocks.
Sections
Sections are groups of elements that are grouped in a horizontal box on your page such as heroes, navigation bars, call to action etc.
See the sections list for details.
Components
Components are elements that have properties that can be edited when clicked, elements such as images, headings, paragraphs etc.
See the components list for details.
Blocks
Blocks are groups of elements that are used as quick templates that can be dropped on the page such as contact forms, product or post lists, carousels, sliders, image galleries etc.
See the blocks list for details.
Styles
Styles can be used to change a theme appearance/style like typography or color palette.