Mastering CSS Units
Build Responsive, Scalable Designs with Confidence
Master the art of sizing and spacing in CSS by understanding the complete landscape of available units. This guide takes you beyond basic pixel measurements to explore how relative units, viewport-based sizing, and modern CSS features work together to create truly responsive designs. You'll learn when to use em versus rem, how viewport units solve specific design challenges, and why container queries represent the future of component-based design. Through practical examples and real-world scenarios, discover how strategic unit selection prevents common responsive design failures, reduces maintenance overhead, and creates designs that scale beautifully across all devices. Whether you're building a small website or a complex design system, this book provides the knowledge to make confident, informed decisions about every measurement in your CSS.
Est. Length
207 pages (10 chapters)
Language
English
Publication date
Jan 27, 2026
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