What is difference between em and px?

Related questions

1. What is PX size?
2. What does PX mean in size?
3. What is PX medication?
4. What is the difference between REM and em and px?
5. What is the difference between PT and PX?
6. What does PX stand for?
7. Is PT and PX the same?
8. What size font is 3.5 inches?
9. What is the difference between EM and PX?
10. How do I convert PT to pixels in Photoshop?

Tags

1. #fixed
2. #screen
3. #computer
4. #units
5. #equal
6. #instance
7. #media
8. #current
9. #scalable
10. #document
11. #pixels