A guide to using Primer.css

Primer.css is GitHub's internal CSS framework designed to ensure consistent styling across a website, drawing inspiration from the BEM (Block, Element, Modifier) methodology. The framework is divided into utilities, components, and marketing styles, focusing on responsiveness and theming options like light and dark modes. Primer.css provides comprehensive utilities for padding, margins, typography, colors, borders, and flexbox, promoting a modular approach to styling. Components such as buttons, alerts, and loaders are pre-built for uniformity, while breakpoints and spacing scales enhance responsiveness. Primer.css employs a unique naming convention similar to BEM but uses hyphens instead of underscores for elements, and ARIA attributes for button components. It emphasizes clean, reusable code, making it a versatile choice for building scalable and consistent user interfaces, supported by modern tools like LogRocket for performance monitoring.