Very simple ebook formatting

Hi, I have created a long document in Canva (infinite scrolling format) for an ebook that will be offered as a bonus. I need your help to make the formatting look professional yet very simple, as this is just supplementary material. Here's what I need:

Apply a Simple Background:

Add a clean, consistent background throughout the document (suitable with a nutrition ebook).
Ensure it doesn't interfere with the readability of the text.
Structure the Document into Pages:

Convert the "infinite scrolling" layout into standard, paginated sections (A4 or similar ebook-friendly format).
Organize the content naturally across the pages without disrupting the flow.
Ensure Basic Formatting:

Align text properly.
Add spacing and margins to make it easy to read.
Deliverables:

Provide the formatted ebook in PDF and editable Canva format.
This is a straightforward task and doesn't require any elaborate design work. Simplicity is key as this is just bonus content. Please keep the process efficient and cost-effective.

the ebook is in italian, about nutrition