# Box This is your foundational structural element for composing UI. It can be styled using predefined tokens. Use it to build your layout. ```tsx import {render, Box} from '@shopify/ui-extensions-react/admin'; render('Playground', () => ); function App() { return ( Box ); } ``` ```js import {extend, Box} from '@shopify/ui-extensions/admin'; extend('Playground', (root) => { const box = root.createComponent( Box, {padding: 'base'}, 'Box', ); root.appendChild(box); }); ``` ## BoxProps ### BoxProps ### accessibilityRole value: `AccessibilityRole` Sets the semantic meaning of the component’s content. When set, the role will be used by assistive technologies to help users navigate the page. ### blockSize value: `number | `${number}%`` Adjust the block size. - `number`: size in pixels. - `` `${number}%` ``: size in percentages of the available space. ### minBlockSize value: `number | `${number}%`` Adjust the minimum block size. - `number`: size in pixels. - `` `${number}%` ``: size in percentages of the available space. ### maxBlockSize value: `number | `${number}%`` Adjust the maximum block size. - `number`: size in pixels. - `` `${number}%` ``: size in percentages of the available space. ### inlineSize value: `number | `${number}%`` Adjust the inline size. - `number`: size in pixels. - `` `${number}%` ``: size in percentages of the available space. ### minInlineSize value: `number | `${number}%`` Adjust the minimum inline size. - `number`: size in pixels. - `` `${number}%` ``: size in percentages of the available space. ### maxInlineSize value: `number | `${number}%`` Adjust the maximum inline size. - `number`: size in pixels. - `` `${number}%` ``: size in percentages of the available space. ### padding value: `MaybeAllBoxEdgesShorthandProperty` Adjust the padding. To shorten the code, it is possible to specify all the padding for all edges of the box in one property. - `base` means block-start, inline-end, block-end and inline-start paddings are `base`. - `base none` means block-start and block-end paddings are `base`, inline-start and inline-end paddings are `none`. - `base none large` means block-start padding is `base`, inline-end padding is `none`, block-end padding is `large` and inline-start padding is `none`. - `base none large small` means block-start padding is `base`, inline-end padding is `none`, block-end padding is `large` and inline-start padding is `small`. - `true` applies a default padding that is appropriate for the component. Learn more about the 1-to-4-value syntax at https://developer.mozilla.org/en-US/docs/Web/CSS/Shorthand_properties#edges_of_a_box ### paddingBlock value: `MaybeTwoBoxEdgesShorthandProperty` Adjust the block-padding. - `base none` means block-start padding is `base`, block-end padding is `none`. ### paddingBlockStart value: `boolean | SpacingKeyword` Adjust the block-start padding. ### paddingBlockEnd value: `boolean | SpacingKeyword` Adjust the block-end padding. ### paddingInline value: `MaybeTwoBoxEdgesShorthandProperty` Adjust the inline padding. - `base none` means inline-start padding is `base`, inline-end padding is `none`. ### paddingInlineStart value: `boolean | SpacingKeyword` Adjust the inline-start padding. ### paddingInlineEnd value: `boolean | SpacingKeyword` Adjust the inline-end padding.