Kevin Powell's article explains the significance of using container queries in CSS for responsive design. Unlike traditional viewport-based units, cqi and cqb units measure sizes relative to the container, enhancing flexibility in layout. Specifically, 1cqi represents 1% of the container's width, while 1cqb represents 1% of its height. The article also highlights cqmin and cqmax units, which determine the maximum size from both the inline and block dimensions, thereby supporting conditional logic in layout adjustments. This feature becomes particularly beneficial in scenarios where writing modes might change.
Using container queries enables the application of container query units (cqi and cqb), allowing sizing elements relative to their container size rather than the viewport.
1cqi corresponds to 1% of the container's inline size, while 1cqb equates to 1% of the container's block size, fostering responsive design.
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