If the mobile web page does not use REM adaptation, is there any other screen adaptation solution?

at present, generally speaking, REM is used as the screen adaptation solution for web development on mobile devices. Is there any other solution if REM, is not used?

Jan.30,2022

if you don't use rem, you have to write css media queries for many screen widths, that is, @ media screen
or the percentage of width usage


you can use vw or vw


ui frameworks are all based on px

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