clamp(min, preferred, max) giới hạn giá trị trong khoảng.
Ví dụ: font-size: clamp(1rem, 2.5vw, 2rem) = fluid typography tự co giãn. Thay thế nhiều media queries, tạo responsive sizing mượt.
clamp(min, preferred, max) constrains a value within a range.
Example: font-size: clamp(1rem, 2.5vw, 2rem) = fluid typography that scales automatically. Replaces multiple media queries and creates smooth responsive sizing.