vanilla-extract tutorial: Create zero-runtime style sheets in TypeScript

The tutorial explores the use of vanilla-extract, a tool for creating zero-runtime style sheets in TypeScript or JavaScript, by guiding users through building an example app with React and webpack. Vanilla-extract offers features similar to CSS preprocessors like Sass or Less but generates styles during the build process, providing benefits such as locally scoped class names, CSS variables, and support for themes without globals. The tutorial instructs on setting up a project, installing necessary packages, and configuring webpack and Babel for vanilla-extract. It demonstrates creating themes and styles using the createTheme and style functions and introduces Sprinkles, a zero-runtime atomic CSS framework that enhances the organization and reusability of styles by using utility classes and predefined properties. The guide integrates these styles into React components, showcasing how to apply conditional styles for different device sizes. Finally, it emphasizes the improvements in code reusability and organization achieved through vanilla-extract and encourages further exploration of its features, such as dynamic runtime theming and calculation expressions.