CSS Math Functions: A Simple Guide for Designers & Developers In modern CSS, math functions let you perform real calculations directly in your styles. This empowers your layouts, spacing, and responsive design with more flexibility and control. Let’s explore what CSS math functions are, why they matter, and how to use them. What Are CSS Math Functions? CSS math functions let you compute values in real time. Instead of hardcoding numbers, you can use formulas. The most commonly supported math functions are: calc() min() max() clamp() These allow mixing units (e.g., % + px ) or setting limits on values. Why Use Math Functions? Responsive design becomes easier — e.g. mix percentages and fixed px values. Dynamic spacing & sizing without needing many media queries. Constraints & boundaries — you can ensure a value stays between a minimum and maximum. Cleaner code — fewer manual adjustments. How Each Function Works + Examples 1. ca...