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 vote109 views1 answer
Css sticky navigatiojn
CSS
0 vote116 views2 answers
Sass variables across files
CSS
0 vote124 views1 answer
Button style link
CSS
0 vote114 views1 answer
3d rotating text css
CSS
5 votes103 views2 answers
Scss hover
CSS
1 vote118 views1 answer
CSS3
CSS
0 vote115 views1 answer
Responsive css webpage code
CSS
32 votes113 views6 answers
Css animations
CSS
0 vote123 views1 answer
Css efeito negativo fotos
CSS
0 vote117 views5 answers
Style
CSS