Add "Unit Information" (#22113)

* Add "Unit Information" * Fixed formatting
2018-11-08 04:12:35 +05:30
parent 5242bba543
commit 3bf39c6146
1 changed files with 4 additions and 0 deletions
--- a/guide/english/css/margins/index.md
+++ b/guide/english/css/margins/index.md
@ -53,6 +53,10 @@ An element can be aligned to the center by making it a block element and changin
 }
 ```

+## Unit Information
+ - Pixels (`px`) are relative to the viewing device.
+ - `em` implies relative to the font-size of the element (2em means 2 times the size of the current font).
+ - `%` implies relative to the parent element.

 ## Browser Support
 It is effectively supported in all browsers (since IE6+, Firefox 2+, Chrome 1+ etc)