next js styled components classname did not match

To resolve the issue of mismatched class names when using styled-components with Next.js, you can follow the steps below:

  1. Install the necessary packages: Install both styled-components and babel-plugin-styled-components packages in your Next.js project. You can use the following command to install them:

npm install styled-components babel-plugin-styled-components

  1. Create a .babelrc file: In the root directory of your Next.js project, create a file named .babelrc if it doesn't already exist. This file is used to configure Babel, the JavaScript compiler used by Next.js. Open the .babelrc file and add the following configuration:

json { "presets": ["next/babel"], "plugins": [["styled-components", { "ssr": true }]] }

This configuration sets up the styled-components plugin to work with server-side rendering (SSR) in Next.js.

  1. Create a custom _app.js file: In the pages directory of your Next.js project, create a file named _app.js (if it doesn't already exist). This file is used to customize the Next.js app component. Open the _app.js file and add the following code:

```jsx import { createGlobalStyle, ThemeProvider } from 'styled-components';

const GlobalStyle = createGlobalStyle/ Add your global styles here /;

function MyApp({ Component, pageProps }) { return ( ); }

export default MyApp; ```

Here, you can define any global styles using the createGlobalStyle function from styled-components. Replace the empty object {} in the ThemeProvider component with your desired theme.

  1. Import and use styled-components: In your React components, import styled from styled-components and use it to create styled components. You can define styles using tagged template literals. For example:

```jsx import styled from 'styled-components';

const Button = styled.button/ Add your styles here /;

function MyComponent() { return ; } ```

You can now use the Button component in your application, and Next.js will handle the class names correctly.

By following these steps, you should be able to resolve the issue of mismatched class names when using styled-components with Next.js.