Hi, I'm Shamim Hossain
Answer some questions and I will help you to figure out the right CSS unit for your project.
Assuming you are only using these units for web development, not for print media.
px rem ch
px is probably fine, but if you're using rem for most things, you could stay with that for consistency.ch is always very handy, as it's equivalent to roughly 1 character wide, and can make it easy to set max widths for line-lengths. if you've never used ch, you can learn more about the ch unit in this video.