skewY()

The skewY() CSS function defines a transformation that skews an element in the vertical direction on the 2D plane. Its result is a <transform-function> data type.

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This transformation is a shear mapping (transvection) that distorts each point within an element by a certain angle in the vertical direction. The ordinate (vertical, y-coordinate) of each point is modified by a value proportionate to the specified angle and the distance to the origin; thus, the farther from the origin a point is, the greater will be the value added it.

Syntax

css

skewY(a)

Values

a: Is an <angle> representing the angle to use to distort the element along the ordinate (vertical, y-coordinate).

Cartesian coordinates on ℝ^2	Homogeneous coordinates on ℝℙ^2	Cartesian coordinates on ℝ^3	Homogeneous coordinates on ℝℙ^3
$(\begin{matrix} 1 & 0 \\ tan (a) & 1 \end{matrix})$	$(\begin{matrix} 1 & 0 & 0 \\ tan (a) & 1 & 0 \\ 0 & 0 & 1 \end{matrix})$	$(\begin{matrix} 1 & 0 & 0 \\ tan (a) & 1 & 0 \\ 0 & 0 & 1 \end{matrix})$	$(\begin{matrix} 1 & 0 & 0 & 0 \\ tan (a) & 1 & 0 & 0 \\ 0 & 0 & 1 & 0 \\ 0 & 0 & 0 & 1 \end{matrix})$
$(\begin{matrix} 1 & 0 \\ tan (a) & 1 \end{matrix})$	`[1 tan(a) 0 1 0 0]`

Examples

HTML

html

<div>Normal</div>
<div class="skewed">Skewed</div>

CSS

css

div {
  width: 80px;
  height: 80px;
  background-color: skyblue;
}

.skewed {
  transform: skewY(40deg);
  background-color: pink;
}

Result

Specifications

Specification
CSS Transforms Module Level 1 # funcdef-transform-skewy

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`skewY`	1	12	3.5	9	10.5	3.1	2	18	4	11	3.2	1.0

Docs

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