# translateY

> Translates the element along the block axis using the spacing scale or a raw CSS length.

```ts
import { translateY } from "@sdxc/u/transform";
```

Translates the element along the block axis using the spacing scale or a
raw CSS length. Composable with every other `transform/` utility.

## Quick reference

Every documented call, beside the CSS it emits.

| Call | CSS |
| --- | --- |
| `u.translateY(4)` | `css({ "--ui-translate-y": "calc(var(--ui-spacing, 0.25rem) * 4)", transform: "translate(var(--ui-translate-x, 0), var(--ui-translate-y, 0)) ..." })` |

## Examples

### Basic example

Use `translateY(n)` with a step of the spacing scale, like `translateY(2)` or `translateY(6)`, to move an element vertically:

```tsx
<div mix={[...]}>
	<div mix={[...]}>
		<div mix={[translateY(2), ...]}>translateY(2)</div>
	</div>
	<div mix={[...]}>
		<div mix={[translateY(6), ...]}>translateY(6)</div>
	</div>
</div>
```

### Using negative values

Pass a negative step, like `translateY(-6)`, to move an element up:

```tsx
<div mix={[...]}>
	<div mix={[...]}>
		<div mix={[translateY(-2), ...]}>translateY(-2)</div>
	</div>
	<div mix={[...]}>
		<div mix={[translateY(-6), ...]}>translateY(-6)</div>
	</div>
</div>
```

### Using percentages and lengths

Pass a string for any CSS length; a percentage like `translateY("-25%")` is a share of the element's own height:

```tsx
<div mix={[...]}>
	<div mix={[...]}>
		<div mix={[translateY("-25%"), ...]}>translateY("-25%")</div>
	</div>
	<div mix={[...]}>
		<div mix={[translateY("12px"), ...]}>translateY("12px")</div>
	</div>
</div>
```

### Lifting on hover

Combine it with `hover()` and a `transition("transform")` to lift a card under the pointer. Hover the card to try it:

```tsx
<div mix={[hover(translateY(-1)), transition("transform"), ...]}>
	Hover to lift this card
</div>
```

## Using a custom value

Every scale argument also takes a raw CSS value, which passes through untouched.

```ts
u.translateY("2.75rem")
```

## Applying on a state

Wrap the call in a state utility to scope it to one selector.

```ts
u.hover(u.translateY(4))
```

## Responsive design

Wrap the call in a container query to scope it to one width.

```ts
u.at("md", u.translateY(4))
```

## Customizing your theme

### Customizing spacing

Every numeric step multiplies `--ui-spacing`, so redefining it rescales every spacing and sizing utility at once:

```css
:root {
	--ui-spacing: 0.25rem;
}
```

Every call that names the step now reads the new value:

```ts
translateY(4)
```

## Signature

```ts
u.translateY(value: SpacingValue)
```