You can use react-native-css-loader width react-native-webpack-server, which can use webpack to built react-native app better.
css loader module for webpack
Image loader
SVG-Powered component to easily create placeholder loadings (like Facebook cards loading)
Provides a layer of interoperability between React Native and CSS stylesheets allowing to use CSS as a styling language for both React Native and React Native Web. The interoperability goes beyond basic styles allows the use of modern features such as CSS
style loader module for webpack
App loader for background applications
Convert CSS text to a React Native stylesheet object
A CLI for dynamically importing stories into [Storybook for React Native](https://storybook.js.org/docs/guides/guide-react-native/).
Sass loader for webpack
A Less loader for webpack. Compiles Less to CSS.
Drawer component for React Native
Fully working project examples showing how to use BrowserSync in various ways
An inline CSS processor to translate CSS properties to React Native styles.
A collection of loading indicators animated with CSS for React
A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations
PostCSS loader for webpack
Shims for the latest ES module features
A cross-platform, performant image component for React Native and Expo with Web support
Use CSS stylesheets in React Native
SASS resources loader for Webpack
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Fast, expressive styling for React.
extracts inlined source map and offers it to webpack