# CSS - skewX()

The skewX() CSS function is a horizontal shear mapping distorting each point of an element by a certain angle in the horizontal direction. It is done by increasing the abscissa coordinate by a value proportionate to the specified angle and to the distance to the origin. The more far from the origin, the more away the point is, the greater will be the value added to it.

## Examples

### HTML

HTML
<p>foo</p>
<p class="transformed">bar</p>

### CSS

CSS
p {
width: 50px;
height: 50px;
background-color: teal;
}

.transformed {
transform: skewX(10deg);
background-color: blue;
}

CSS
skewX(a)

## Description

The skewX() CSS function is a horizontal shear mapping distorting each point of an element by a certain angle in the horizontal direction. It is done by increasing the abscissa coordinate by a value proportionate to the specified angle and to the distance to the origin. The more far from the origin, the more away the point is, the greater will be the value added to it.

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]