Rem vs em

Em vs rem

1EM or 1REM (r = root em)
The difference is inheritance.
The Rem value is based on the root element (html).
What is meant here is the font size for html and not the font size for the documet body.
... Em is based on the font size of each
Parent element.

Rem vs em

/* rem */
Translation of rem units to pixel value is determined by the font size
of the html element. This font size is influenced by inheritance from 
the browser font size setting unless explicitly overridden with a unit 
not subject to inheritance (px or vw). 

/* em */
Translation of em units to pixel values is determined by the font size 
of the element they’re used on. This font size is influenced by 
inheritance from parent elements unless explicitly overridden with 
a unit not subject to inheritance. ---> change the menu’s font size the
spacing (paddings etc) around the menu items will scale proportionately,
independently of the rest of the layout.

Source: webdesign.tutsplus.com

Similar codes

-1 vote318 views1 answer
<link>
CSS
40 votes321 views3 answers
Select first 5 child css
CSS
9 votes341 views3 answers
Css bottom
CSS
0 vote336 views1 answer
Bootstrap 5 sidebar class
CSS
0 vote335 views1 answer
Paper.css
CSS
1 vote365 views4 answers
Screen orientation css
CSS
45 votes342 views6 answers
Css text align center
CSS
0 vote335 views2 answers
Css full cover background image
CSS
0 vote382 views1 answer
Spanning Items Across Rows and Columns
CSS
0 vote323 views1 answer
Text weaving animation in css
CSS