Can the calc () of CSS3 achieve equal-scale display of pictures on the mobile side?

such as the title.
looked up some information, which is usually done with the background, and set the width and degree.
1. Can the picture be displayed in equal proportion on all mobile ends with varying width and height?
2.calc () Mobile browser compatibility

May.22,2021

refer to css object-fit: scale-down
https://developer.mozilla.org.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e5afba-455d3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5afba-455d3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?