none, underline.inherit: Effectively forces inheritanceinitial: Resets to initial (user-agent) valueunset: inherit if it is, by default, an inherited property, otherwise initialrevert removes author specific stylesrevert-layer: same but specific to the current cascade layerall: <global-keyword>:
direction, unicode-bidi, and any custom propertyall: inherit, which would inherit all parent properties (even some unexpected)url(<absolute or relative>) (quotes optional)
https://google.com/path/to/thing or relative (path/to/thing)https://mysite.com/pages/foo.html and <link href="path/to/thing">https://mysite.com/pages/path/to/thinghttps://mysite.com/pages/foo.html, <link href="styles/some.css">, and styles/some.css has @import url(graphics/foo.gif))https://mysite.com/pages/styles/graphics/foo.gif<url> | <gradient> | <image-set> | <cross-fade>
url(..)linear-gradient(#f69d3c, #3f87a6)))image-set('image1.png' 1px, 'image2.png' 2px))cross-fade(url(white.png) 0%, url(black.png) 100%))<number>%<number>fr = fraction of leftover space (grid containers)
<length>s and can’t be used in calc()All lengths must be followed by a unit except 0.
font-size: 16px should be consistent on devices with 96dpi and devices with 470 dpiem: 1em = calculated font-size of the element.
m of a given fontex: same as em but considers lowercase x of a given fontch: same but represents one character, equal to advance measure of the “0” (zero, unicode U+0030) glyph found in the given font
If glyph is not found, it must be assumed to be 0.5rem wide by 1rem tallic: same as ch but for the “水” glyph (CJK water ideograph, U+6C34) found in the fontcap: “cap height” (nominal height of capital letters) of the element’s fontlh: height of computed line-height propertyr<existing-unit>, such as rem
<html> font-sizevw: width (viewport width / 100)vh: height (viewport height / 100)vb: blockvi: inlinevmin: minimum (vp width OR height, whichever is smallest)vmax: maximum (vp width OR height, whichever is largest)