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Layout

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Description

To make it easier to build application layout and form-views in line with defined design sketches, there are a number of components for layout.

Wrappers

  • Card is a block section element showing the white box with rounded gray borders, adding spacing automatically.

  • Stack is an outer block element for wrapping content to get the correct layout and spacing between region and region headings.

Flex layout

  • Flex.Container is a building block for CSS flexbox based layout of contents and components.

    • <Flex.Vertical> can be used as an alias instead of the property direction="vertical".
    • <Flex.Horizontal> can be used as an alias instead of the property direction="horizontal".

  • Flex.Item is a building block for CSS flexbox based layout of contents and components.

Grid layout

  • GridContainer is a layout system for CSS grid based layout of contents.

  • GridItem is a layout system for CSS grid based layout of contents.

Columns

UX designers are using a 12 column system, along with a 4 and 6 column system, during their design processes.

What are the differences between Flex and Grid?

Both to support different sizing of items on different media breakpoints.

Flex

Uses CSS flexbox.

  • Best suited for Forms layout.
  • Can either stack vertically or horizontally.
  • Can be used with any kind of children.
  • Even distribution of space.
  • Keeps order of items like they where given in the DOM structure.
  • Items can be sized in percentage.
  • When a size (percentage) is given, they stack horizontally.
import { Flex } from '@dnb/eufemia'
render(
  <Flex.Container>
    <Flex.Item>content</Flex.Item>
    <OtherComponent>content</OtherComponent>
  </Flex.Container>,
)

Grid

Uses CSS grid.

  • Best suited for applications with a column based layout.
  • Columns do change between 4, 6 and 12 on the given size (media query) of the browser or screen size.
  • GridContainer depends on GridItem (Item).
  • Items do span from column a to b.
  • Items can have different order in opposition from what's given in the DOM structure.
import { Layout } from '@dnb/eufemia'
render(
  <Layout.GridContainer>
    <Layout.GridItem>content</Layout.GridItem>
    <Layout.GridItem>content</Layout.GridItem>
  </Layout.GridContainer>,
)

Units and responsiveness

Please – use rem instead of px for all of your custom CSS, and make sure;

  • you always use the nearest half rem value, like 0.5rem, 1rem or 1.5rem and so forth.
  • you always get a total computed height within the grid.

This results in maintaining the integrity of the 8px base grid.

Exceptions

There are exceptions for when you define a "minimum" of an area, such as min-width. Because it will increase in size when a larger browser font-size is used. In that case, user px as your sizing unit.

Smaller Units

Sometimes you may need a compensation of only a few pixels. Heres how to calculate the correct rem values:

  • 1px = 1/16x1 = 0.0625rem
  • 2px = 1/16x2 = 0.125rem
  • And so on ...