The video tutorial explains how to implement a modal component in a Next.js application. It begins by discussing the differences between client-side and server-side rendering in React and Next.js. The tutorial then guides viewers through creating a custom document in Next.js to accommodate a modal root. It covers building a reusable modal component with React, including styling and handling state. Finally, the video demonstrates how to integrate the modal component into a page, ensuring it functions correctly with event handling.

What is the main difference between client-side React and server-side rendered React in the context of this text?

Explain the purpose of the 'useEffect' hook in the modal component.

What is the significance of the 'create portal' method in React?

Describe how to create a custom document in Next.js.

What should be included in the custom document file for the modal to function correctly?

What are the props that the modal component accepts?

How do you manage the visibility of the modal in the component?

What steps are necessary to integrate the modal into an edit page?

Explain the role of the 'handleClose' function in the modal component.

How does the modal component handle the closing action when the close button is clicked?