📄️ Custom section
After choose a section from the library. You might want to change it a bit (like change section background, Video block to Image, or change icon/button styles...). The Custom page help you to do this easily.
📄️ Section settings
Styles are using to decorate elements, blocks.
📄️ Change blocks
You can change an existing block to another. Click button ... near block title, choose "Change block"