Bootstrap 5 Theme Customization: Quickly Modifying Colors and Font Styles

Customizing Bootstrap themes can meet personalized needs (such as brand colors and fonts), and using CSS variables ensures responsiveness while being convenient. Preparation: Introduce Bootstrap 5 CSS via CDN (JavaScript is required for interactive components). The core principle is that Bootstrap 5 styles are controlled by CSS variables (e.g., --bs-primary for the primary color, --bs-font-sans-serif for sans-serif fonts). Modifying these variables can override default styles, and utility classes will take effect synchronously. Key modifications: For colors, modify variables like --bs-primary (primary color) and --bs-secondary (secondary color), and related utility classes (e.g., bg-primary) will automatically take effect after the override. For fonts, adjust the font family (e.g., switch to Arial or Google Fonts), size, and line height. Practical steps: After introducing Bootstrap, define variables in the :root of custom CSS, and verify the effect using utility classes in HTML. Summary: Modifying CSS variables is efficient, and theme customization can be completed in three steps, suitable for personalized website development.