vanilla-css

To write modern vanilla CSS without a preprocessor, leverage native features like custom properties, cascade layers, and nesting to build production-quality stylesheets. This approach enforces progressive enhancement and BEM methodology for maintainable styling.

Yes, you can use container queries and color-mix with oklch for responsive theming in modern vanilla CSS. These native features enable dynamic style adjustments based on element dimensions and advanced color manipulation without requiring preprocessor functions.

The best way to structure a complex UI component using native CSS is applying BEM methodology alongside modern features like nesting and logical properties. This ensures maintainability, accessibility, and progressive enhancement without a build step.

Vanilla CSS supports modern features like :has() and scroll-driven animations natively. You can utilize these selectors and animation behaviors alongside view transitions and the Popover API to create interactive, production-grade UI experiences.

Use vanilla CSS over preprocessors for production web development to eliminate build steps for styling while maintaining performance. Native capabilities like subgrid, anchor positioning, and @scope provide advanced layout control directly in the browser.

You should reconsider using vanilla CSS for styling if your project requires supporting legacy browsers that lack support for modern features like cascade layers, custom properties, or container queries, as progressive enhancement assumes baseline compatibility.