translateY() CSS function

The translateY() CSS function repositions an element vertically on the 2D plane. Its result is a <transform-function> data type.

Try it

transform: translateY(0);
transform: translateY(42px);
transform: translateY(-2.1rem);
transform: translateY(3ch);
<section id="default-example">
  <img
    class="transition-all"
    id="static-element"
    src="/shared-assets/images/examples/firefox-logo.svg"
    width="200" />
  <img
    class="transition-all"
    id="example-element"
    src="/shared-assets/images/examples/firefox-logo.svg"
    width="200" />
</section>
#static-element {
  opacity: 0.4;
  position: absolute;
}

#example-element {
  position: absolute;
}

Note: translateY(ty) is equivalent to translate(0, ty) or translate3d(0, ty, 0).

Syntax

css
/* <length-percentage> values */
transform: translateY(200px);
transform: translateY(50%);

Values

<length-percentage>

The value is a <length> or <percentage> representing the ordinate (vertical, y-coordinate) of the translating vector [0, ty]. In Cartesian coordinate system it represents shift along y-axis. A percentage value refers to the height of the reference box defined by the transform-box property.

Cartesian coordinates on ℝ^2Homogeneous coordinates on ℝℙ^2Cartesian coordinates on ℝ^3Homogeneous coordinates on ℝℙ^3

A translation is not a linear transformation in ℝ^2 and can't be represented using a Cartesian-coordinate matrix.

(10001t001)\left( \begin{array}{ccc} 1 & 0 & 0 \\ 0 & 1 & t \\ 0 & 0 & 1 \end{array} \right)
(10001t001)\left( \begin{array}{ccc} 1 & 0 & 0 \\ 0 & 1 & t \\ 0 & 0 & 1 \end{array} \right)
(1000010t00100001)\left( \begin{array}{cccc} 1 & 0 & 0 & 0 \\ 0 & 1 & 0 & t \\ 0 & 0 & 1 & 0 \\ 0 & 0 & 0 & 1 \end{array} \right)
[1 0 0 1 0 t]

Formal syntax

<translateY()> = 
  translateY( <length-percentage> )  

<length-percentage> = 
  <length>      |
  <percentage>

Examples

undefined

HTML

html
<div>Static</div>
<div class="moved">Moved</div>
<div>Static</div>

CSS

css
div {
  width: 60px;
  height: 60px;
  background-color: skyblue;
}

.moved {
  transform: translateY(10px);
  background-color: pink;
}

Result

Specifications

See also