Catalog is a responsive HTML5/CSS3 template built on Bootstrap 3 framework, featuring full cross-device compatibility and adaptive layout for all screen sizes. The template includes: - **Bootstrap 3** foundation for responsive design - **Mobile-first** approach ensuring seamless performance on smartphones and tablets - **Modern HTML5/CSS3** standards for clean, efficient code - **Cross-browser compatibility** for consistent rendering - **Flexible grid system** for adaptable content organization Ideal for developers and designers seeking a lightweight, scalable solution for web projects.