🏠 New in High Baseline Support: em unit
January 29, 2018
The em CSS length unit is a font-relative length equal to the specified font size. In an element with a 2 inch font, 1em equals 2 inches.
Source features
css.types.length.em[mdn]
January 29, 2018
The em CSS length unit is a font-relative length equal to the specified font size. In an element with a 2 inch font, 1em equals 2 inches.
css.types.length.em [mdn]