skewX()

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

This transformation is a shear mapping (transvection) that distorts each point within an element by a certain angle in the horizontal direction. The abscissa 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.

Note: skewX(a) is equivalent to skew(a).

Syntax

skewX(a)

Values

a
Is an <angle> representing the angle to use to distort the element along the abscissa.
Cartesian coordinates on ℝ2 Homogeneous coordinates on ℝℙ2 Cartesian coordinates on ℝ3 Homogeneous coordinates on ℝℙ3
$\left(\begin{array}{c}1tan\left(ay\right)\\ 01\end{array}\right)$ $\left(\begin{array}{cc}1tan\left(ay\right)& 0\\ 01& 0\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{cc}1tan\left(ay\right)& 0\\ 01& 0\\ 0& 0& 1\end{array}\right)$ $\left(\begin{array}{ccc}1tan\left(ay\right)& 0& 0\\ 01& 0& 0\\ 0& 0& 1& 0\\ 0& 0& 0& 1\end{array}\right)$
[1 0 tan(a) 1 0 0]

Examples

HTML

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

CSS

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

.skewed {
transform: skewX(10deg); /* Equal to skew(10deg) */
background-color: pink;
}

Specifications

Specification Status Comment
CSS Transforms Level 1
The definition of 'skewX()' in that specification.
Working Draft Initial definition

Browser compatibility

Please see the <transform-function> data type for compatibility info.