CSS – calc() Function
The calc() function performs a mathematical calculation to be used as the property value.
CSS – conic-gradient() Function
The conic-gradient() function sets a conic gradient as the background image with at least two color transitions rotated around a center point.
CSS – counter() Function
The counter() function returns the current value of the named counter as a string.
CSS – cubic-bezier() Function
The cubic-bezier() function describes a curve that is defined by four points P0 (starting point/state), P1, P2, and P3 (ending point/state).
CSS – hsl() Function
The HSL color value is specified with the hsl() function, which has the following syntax: hsl(hue, saturation, lightness).
CSS – max() Function
The max() function uses the largest value, from a comma-separated list of values, as the property value.
CSS – hsla() Function
The HSLA color value is specified with the hsla() function, which has the following syntax: hsla(hue, saturation, lightness, alpha).
CSS – min() Function
The min() function uses the smallest value, from a comma-separated list of values, as the property value.
CSS – linear-gradient() Function
The linear-gradient() function sets a linear gradient as the background image.
CSS – radial-gradient() Function
The radial-gradient() function sets a radial gradient as the background image.
CSS – repeating-linear-gradient Function
The repeating-linear-gradient() function is used to repeat linear gradients.
CSS – repeating-conic-gradient Function
The repeating-conic-gradient() function is used to repeat conic gradients.
CSS – rgb() Function
An RGB color value is specified with the rgb() function, which has the following syntax: rgb(red, green, blue).
CSS – repeating-radial-gradient Function
The repeating-radial-gradient() function is used to repeat radial gradients.
CSS – rgba() Function
An RGBA color value is specified with the rgba() function, which has the following syntax: rgba(red, green, blue, alpha).
CSS – var() Function
The var() function is used to create a CSS variable and insert the value into a property.
CSS – currentcolor Keyword
The currentcolor keyword refers to the value of the color property of an element, and can be used to set other properties within the element to the same color.
CSS – @font-face Rule
The @font-face rule allows for the use of fonts other than “web-safe” fonts. A font name is defined for the font and then the custom font is pointed to it.
CSS – @import Rule
The @import rule allows you to import a style sheet into another style sheet, and must be at the top of the document just after the @charset declaration.
CSS – Inherit vs Initial vs Unset Keywords
The inherit keyword specifies that a property should inherit its value from its parent. The initial keyword is used to set a property to its default value.