Going beyond pixels and (r)ems in CSS - Absolute length units - iO tech_hubAbsolute CSS units like pixels can be useful for precise layouts and working with external media.Absolute units like centimeters, millimeters, and inches are suitable for print layouts and fixed-size outputs.
CSS Length Units | CSS-TricksCSS uses various units like pixels, em, rem, percentages, characters, viewport, and container units to define elements' dimensions.