Too Long; Didn't Read
Pixels are one of the most known units of measurement in CSS. REM is used to set font size based on the font size of the root element. Em is similar to px or rem or em. Pixels can be divided by 10 to get an equivalent value of px in rem. Em em is similar but there's a key difference and I'll show you how these 3 units perform differently with a basic example. To keep accessibility, you need to set the. root element's font size as. 62.5% and it's done.