# Fallback

A component that displays a fallback animation.

## Import

```tsx
import { Fallback } from '@coinbase/cds-web/layout/Fallback'
```

## Examples

### Basic example

```jsx live
<VStack gap={1}>
  <Fallback width={150} height={45} />
  <Fallback width={65} height={45} percentage />
</VStack>
```

### Shape

The shape of the fallback can further be customized with the `shape` prop.

```jsx live
<HStack gap={1}>
  <Fallback width={50} height={50} shape="square" />
  <Fallback width={50} height={50} shape="squircle" />
  <Fallback width={50} height={50} shape="circle" />
</HStack>
```

:::tip Rectangular fallback width

If the fallback shape is a rectangle and the width is specified as a number, then by default, the width value will be recalculated and randomized within a predetermined threshold (e.g. to add some variety when mulitple fallbacks are presented together). If this behavior is undesirable (e.g. in server-side rendered web apps), randomization can be disabled with the `disableRandomRectWidth` prop.

<br />

Alternatively, you may create a rectangle width variant by setting a number value on the `rectWidthVariant` prop. Variants map to a predetermined set of width values, which are cycled through repeatedly when the set is exhausted. Therefore, it's still possible to achieve some variety, but in a deterministic manner (i.e. safe for server-side rendering). Here's an example:

<br />

```jsx live
function RenderFallbacksInList() {
  const items = [{}, {}, {}, {}, {}];
  return (
    <VStack gap={1}>
      {items.map((_, i) => (
        <Fallback width={150} rectWidthVariant={i} />
      ))}
    </VStack>
  );
}
```

:::

## Props

| Prop | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| `height` | `string \| number` | Yes | `-` | - |
| `width` | `string \| number` | Yes | `-` | - |
| `alignContent` | `ResponsiveProp<center \| normal \| start \| end \| flex-start \| flex-end \| stretch \| baseline \| first baseline \| last baseline \| space-between \| space-around \| space-evenly>` | No | `-` | - |
| `alignItems` | `ResponsiveProp<center \| normal \| start \| end \| flex-start \| flex-end \| self-start \| self-end \| stretch \| baseline \| first baseline \| last baseline>` | No | `-` | - |
| `alignSelf` | `ResponsiveProp<center \| normal \| auto \| start \| end \| flex-start \| flex-end \| self-start \| self-end \| stretch \| baseline \| first baseline \| last baseline>` | No | `-` | - |
| `as` | `symbol \| object \| style \| svg \| a \| abbr \| address \| area \| article \| aside \| audio \| b \| base \| bdi \| bdo \| big \| blockquote \| body \| br \| button \| canvas \| caption \| center \| cite \| code \| col \| colgroup \| data \| datalist \| dd \| del \| details \| dfn \| dialog \| div \| dl \| dt \| em \| embed \| fieldset \| figcaption \| figure \| footer \| form \| h1 \| h2 \| h3 \| h4 \| h5 \| h6 \| head \| header \| hgroup \| hr \| html \| i \| iframe \| img \| input \| ins \| kbd \| keygen \| label \| legend \| li \| link \| main \| map \| mark \| menu \| menuitem \| meta \| meter \| nav \| noindex \| noscript \| ol \| optgroup \| option \| output \| p \| param \| picture \| pre \| progress \| q \| rp \| rt \| ruby \| s \| samp \| search \| slot \| script \| section \| select \| small \| source \| span \| strong \| sub \| summary \| sup \| table \| template \| tbody \| td \| textarea \| tfoot \| th \| thead \| time \| title \| tr \| track \| u \| ul \| var \| video \| wbr \| webview \| animate \| animateMotion \| animateTransform \| circle \| clipPath \| defs \| desc \| ellipse \| feBlend \| feColorMatrix \| feComponentTransfer \| feComposite \| feConvolveMatrix \| feDiffuseLighting \| feDisplacementMap \| feDistantLight \| feDropShadow \| feFlood \| feFuncA \| feFuncB \| feFuncG \| feFuncR \| feGaussianBlur \| feImage \| feMerge \| feMergeNode \| feMorphology \| feOffset \| fePointLight \| feSpecularLighting \| feSpotLight \| feTile \| feTurbulence \| filter \| foreignObject \| g \| image \| line \| linearGradient \| marker \| mask \| metadata \| mpath \| path \| pattern \| polygon \| polyline \| radialGradient \| rect \| set \| stop \| switch \| text \| textPath \| tspan \| use \| view \| ComponentClass<any, any> \| FunctionComponent<any>` | No | `-` | - |
| `aspectRatio` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `background` | `currentColor \| fg \| fgMuted \| fgInverse \| fgPrimary \| fgWarning \| fgPositive \| fgNegative \| bg \| bgAlternate \| bgInverse \| bgOverlay \| bgElevation1 \| bgElevation2 \| bgPrimary \| bgPrimaryWash \| bgSecondary \| bgTertiary \| bgSecondaryWash \| bgNegative \| bgNegativeWash \| bgPositive \| bgPositiveWash \| bgWarning \| bgWarningWash \| bgLine \| bgLineHeavy \| bgLineInverse \| bgLinePrimary \| bgLinePrimarySubtle \| accentSubtleRed \| accentBoldRed \| accentSubtleGreen \| accentBoldGreen \| accentSubtleBlue \| accentBoldBlue \| accentSubtlePurple \| accentBoldPurple \| accentSubtleYellow \| accentBoldYellow \| accentSubtleGray \| accentBoldGray \| transparent` | No | `-` | - |
| `borderBottomLeftRadius` | `0 \| 100 \| 200 \| 300 \| 400 \| 500 \| 600 \| 700 \| 800 \| 900 \| 1000` | No | `-` | - |
| `borderBottomRightRadius` | `0 \| 100 \| 200 \| 300 \| 400 \| 500 \| 600 \| 700 \| 800 \| 900 \| 1000` | No | `-` | - |
| `borderBottomWidth` | `0 \| 100 \| 200 \| 300 \| 400 \| 500` | No | `-` | - |
| `borderColor` | `currentColor \| fg \| fgMuted \| fgInverse \| fgPrimary \| fgWarning \| fgPositive \| fgNegative \| bg \| bgAlternate \| bgInverse \| bgOverlay \| bgElevation1 \| bgElevation2 \| bgPrimary \| bgPrimaryWash \| bgSecondary \| bgTertiary \| bgSecondaryWash \| bgNegative \| bgNegativeWash \| bgPositive \| bgPositiveWash \| bgWarning \| bgWarningWash \| bgLine \| bgLineHeavy \| bgLineInverse \| bgLinePrimary \| bgLinePrimarySubtle \| accentSubtleRed \| accentBoldRed \| accentSubtleGreen \| accentBoldGreen \| accentSubtleBlue \| accentBoldBlue \| accentSubtlePurple \| accentBoldPurple \| accentSubtleYellow \| accentBoldYellow \| accentSubtleGray \| accentBoldGray \| transparent` | No | `-` | - |
| `borderEndWidth` | `0 \| 100 \| 200 \| 300 \| 400 \| 500` | No | `-` | - |
| `borderRadius` | `0 \| 100 \| 200 \| 300 \| 400 \| 500 \| 600 \| 700 \| 800 \| 900 \| 1000` | No | `-` | - |
| `borderStartWidth` | `0 \| 100 \| 200 \| 300 \| 400 \| 500` | No | `-` | - |
| `borderTopLeftRadius` | `0 \| 100 \| 200 \| 300 \| 400 \| 500 \| 600 \| 700 \| 800 \| 900 \| 1000` | No | `-` | - |
| `borderTopRightRadius` | `0 \| 100 \| 200 \| 300 \| 400 \| 500 \| 600 \| 700 \| 800 \| 900 \| 1000` | No | `-` | - |
| `borderTopWidth` | `0 \| 100 \| 200 \| 300 \| 400 \| 500` | No | `-` | - |
| `borderWidth` | `0 \| 100 \| 200 \| 300 \| 400 \| 500` | No | `-` | - |
| `bordered` | `boolean` | No | `-` | Add a border around all sides of the box. |
| `borderedBottom` | `boolean` | No | `-` | Add a border to the bottom side of the box. |
| `borderedEnd` | `boolean` | No | `-` | Add a border to the trailing side of the box. |
| `borderedHorizontal` | `boolean` | No | `-` | Add a border to the leading and trailing sides of the box. |
| `borderedStart` | `boolean` | No | `-` | Add a border to the leading side of the box. |
| `borderedTop` | `boolean` | No | `-` | Add a border to the top side of the box. |
| `borderedVertical` | `boolean` | No | `-` | Add a border to the top and bottom sides of the box. |
| `bottom` | `ResponsiveProp<Bottom<string \| number>>` | No | `-` | - |
| `color` | `currentColor \| fg \| fgMuted \| fgInverse \| fgPrimary \| fgWarning \| fgPositive \| fgNegative \| bg \| bgAlternate \| bgInverse \| bgOverlay \| bgElevation1 \| bgElevation2 \| bgPrimary \| bgPrimaryWash \| bgSecondary \| bgTertiary \| bgSecondaryWash \| bgNegative \| bgNegativeWash \| bgPositive \| bgPositiveWash \| bgWarning \| bgWarningWash \| bgLine \| bgLineHeavy \| bgLineInverse \| bgLinePrimary \| bgLinePrimarySubtle \| accentSubtleRed \| accentBoldRed \| accentSubtleGreen \| accentBoldGreen \| accentSubtleBlue \| accentBoldBlue \| accentSubtlePurple \| accentBoldPurple \| accentSubtleYellow \| accentBoldYellow \| accentSubtleGray \| accentBoldGray \| transparent` | No | `-` | - |
| `columnGap` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `dangerouslySetBackground` | `string` | No | `-` | - |
| `disableRandomRectWidth` | `boolean` | No | `-` | Disables randomization of rectangle shape width. |
| `display` | `ResponsiveProp<grid \| revert \| none \| block \| inline \| inline-block \| flex \| inline-flex \| inline-grid \| contents \| flow-root \| list-item>` | No | `-` | - |
| `elevation` | `0 \| 1 \| 2` | No | `-` | - |
| `flexBasis` | `ResponsiveProp<FlexBasis<string \| number>>` | No | `-` | - |
| `flexDirection` | `ResponsiveProp<column \| row \| row-reverse \| column-reverse>` | No | `-` | - |
| `flexGrow` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset` | No | `-` | - |
| `flexShrink` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset` | No | `-` | - |
| `flexWrap` | `ResponsiveProp<nowrap \| wrap \| wrap-reverse>` | No | `-` | - |
| `font` | `ResponsiveProp<FontFamily \| inherit>` | No | `-` | - |
| `fontFamily` | `ResponsiveProp<FontFamily \| inherit>` | No | `-` | - |
| `fontSize` | `ResponsiveProp<FontSize \| inherit>` | No | `-` | - |
| `fontWeight` | `ResponsiveProp<FontWeight \| inherit>` | No | `-` | - |
| `gap` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `grid` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| none` | No | `-` | - |
| `gridArea` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridAutoColumns` | `ResponsiveProp<GridAutoColumns<string \| number>>` | No | `-` | - |
| `gridAutoFlow` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| row \| column \| dense` | No | `-` | - |
| `gridAutoRows` | `ResponsiveProp<GridAutoRows<string \| number>>` | No | `-` | - |
| `gridColumn` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridColumnEnd` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridColumnStart` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridRow` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridRowEnd` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridRowStart` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |
| `gridTemplate` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| none` | No | `-` | - |
| `gridTemplateAreas` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| none` | No | `-` | - |
| `gridTemplateColumns` | `ResponsiveProp<GridTemplateColumns<string \| number>>` | No | `-` | - |
| `gridTemplateRows` | `ResponsiveProp<GridTemplateRows<string \| number>>` | No | `-` | - |
| `justifyContent` | `ResponsiveProp<left \| right \| center \| normal \| start \| end \| flex-start \| flex-end \| stretch \| space-between \| space-around \| space-evenly>` | No | `-` | - |
| `left` | `ResponsiveProp<Left<string \| number>>` | No | `-` | - |
| `lineHeight` | `ResponsiveProp<LineHeight \| inherit>` | No | `-` | - |
| `margin` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `marginBottom` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `marginEnd` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `marginStart` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `marginTop` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `marginX` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `marginY` | `ResponsiveProp<0 \| -5 \| -10 \| -0.25 \| -0.5 \| -0.75 \| -1 \| -1.5 \| -2 \| -3 \| -4 \| -6 \| -7 \| -8 \| -9>` | No | `-` | - |
| `maxHeight` | `ResponsiveProp<MaxHeight<string \| number>>` | No | `-` | - |
| `maxWidth` | `ResponsiveProp<MaxWidth<string \| number>>` | No | `-` | - |
| `minHeight` | `ResponsiveProp<MinHeight<string \| number>>` | No | `-` | - |
| `minWidth` | `ResponsiveProp<MinWidth<string \| number>>` | No | `-` | - |
| `opacity` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset` | No | `-` | - |
| `overflow` | `ResponsiveProp<hidden \| auto \| visible \| clip \| scroll>` | No | `-` | - |
| `padding` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `paddingBottom` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `paddingEnd` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `paddingStart` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `paddingTop` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `paddingX` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `paddingY` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `percentage` | `boolean` | No | `-` | Convert width to a percentage. |
| `pin` | `top \| bottom \| left \| right \| all` | No | `-` | Direction in which to absolutely pin the box. |
| `position` | `ResponsiveProp<fixed \| static \| relative \| absolute \| sticky>` | No | `-` | - |
| `rectWidthVariant` | `number` | No | `-` | When shape is a rectangle, creates a variant with deterministic width. Variants map to a predetermined set of width values, which are cycled through repeatedly when the set is exhausted. |
| `ref` | `any` | No | `-` | - |
| `right` | `ResponsiveProp<Right<string \| number>>` | No | `-` | - |
| `rowGap` | `0 \| 5 \| 10 \| 0.25 \| 0.5 \| 0.75 \| 1 \| 1.5 \| 2 \| 3 \| 4 \| 6 \| 7 \| 8 \| 9` | No | `-` | - |
| `shape` | `rectangle \| circle \| squircle \| square \| hexagon` | No | `rectangle` | - |
| `style` | `CSSProperties` | No | `-` | - |
| `testID` | `string` | No | `-` | Used to locate this element in unit and end-to-end tests. Under the hood, testID translates to data-testid on Web. On Mobile, testID stays the same - testID |
| `textAlign` | `ResponsiveProp<center \| start \| end \| justify>` | No | `-` | - |
| `textDecoration` | `ResponsiveProp<none \| underline \| overline \| line-through \| underline overline \| underline double>` | No | `-` | - |
| `textTransform` | `ResponsiveProp<capitalize \| lowercase \| none \| uppercase>` | No | `-` | - |
| `top` | `ResponsiveProp<Top<string \| number>>` | No | `-` | - |
| `transform` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| none` | No | `-` | - |
| `userSelect` | `ResponsiveProp<text \| none \| auto \| all>` | No | `-` | - |
| `visibility` | `ResponsiveProp<hidden \| visible>` | No | `-` | - |
| `zIndex` | `-moz-initial \| inherit \| initial \| revert \| revert-layer \| unset \| auto` | No | `-` | - |