Summary  
This chapter covers how to import and apply a global CSS file in the root layout component to enforce consistent styles across an entire application.

General domain of usage  
Front-end web development (UI styling)

Global CSS files typically include elements like layout, typography, and other consistent design patterns across different application parts.

If you navigate to the `app/ui` folder, you will find a file named `global.css`. This file allows you to apply CSS rules to all the routes in your app. Although you can include `global.css` in any component, it is recommended to include it in the root layout (`app/layout.tsx`), which is the main component of the app.

Let's add the global styles to the app. Go to `app/layout.tsx` and import the `global.css` file.

After incorporating the global styles, you should see the following view if the local development server is still running: <a href="http://localhost:3000/" target="_blank" style="color: #ff8a00; font-weight: 600; text-decoration: none; transition: .3s ease-in-out" onmouseover="this.style.color='#ff0000'" onmouseout="this.style.color='#d27204'" >http://localhost:3000/</a>

Learn to build modern, high-performance web applications using Next.js. Set up projects with structured layouts, styling, and routing for seamless navigation. Fetch and display data efficiently while optimizing rendering and performance. Implement advanced features like pagination, CRUD operations, and global search for dynamic web apps. Deploy your Next.js projects and connect them with databases, and add authentication to protect user data.

Let's discuss what you need to learn before diving into the Next.js framework, what to expect from this course, and what you'll build.

We will set up the project, inspect ways to add styling to our app and cover visual aspects such as images, fonts, pages, and layouts.

Learn how to easily create and manage a new view for your app and navigate through all pages seamlessly with an incorporated routing system.

Deploy the Next.js app using GitHub and Vercel accounts. Additionally, establish a database to supply the app with the necessary data.

Consider how to obtain and show data to the user clearly and efficiently.

Discover how to implement modern web features such as pagination, CRUD operations, global search, form validation, and more.

Authentication implementation in Next.js.

Adding the Global CSS File

In Practice