Board

Responsive
Rows & Columns
Breakpoints

Note	Commercial feature A commercial Vaadin subscription is required to use Board in your project. Start Free Trial See Pricing

Board is a powerful and easy-to-use layout element for building responsive views. It reorders the components inside it on different screen sizes while maximizing the use of available space.

Open in a
new tab

Source code

board-basic.tsimport { html, LitElement } from 'lit';
import { customElement } from 'lit/decorators.js';
import '@vaadin/board';
import { applyTheme } from 'Frontend/generated/theme';
import './example-indicator';
import './example-chart';

@customElement('board-basic')
export class Example extends LitElement {
  constructor() {
    super();
    this.classList.add('basic-board');
  }

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <!-- tag::snippet[] -->
      <vaadin-board>
        <vaadin-board-row>
          <example-indicator current="745" change="+33.7" title="Current users"></example-indicator>
          <example-indicator
            current="54.6k"
            change="-112.45"
            title="View events"
          ></example-indicator>
          <example-indicator
            current="18%"
            change="+3.9"
            title="Conversion rate"
          ></example-indicator>
          <example-indicator current="-123.45" title="Custom metric"></example-indicator>
        </vaadin-board-row>
        <vaadin-board-row>
          <example-chart></example-chart>
        </vaadin-board-row>
      </vaadin-board>
      <!-- end::snippet[] -->
    `;
  }
}
example-indicator.tsimport { applyTheme } from 'Frontend/generated/theme';
import { css, html, LitElement } from 'lit';
import { customElement, property } from 'lit/decorators.js';
import '@vaadin/icon';
import '@vaadin/icons';
import '@vaadin/vertical-layout';

@customElement('example-indicator')
export class ExampleIndicator extends LitElement {
  static override styles = css`
    .title {
      margin: 0;
      font-size: var(--lumo-font-size-xxs);
      font-weight: 700;
      color: var(--lumo-contrast-50pct);
    }

    .current {
      font-size: var(--lumo-font-size-m);
      font-weight: 700;
    }

    .icon {
      font-size: var(--lumo-font-size-xxs);
    }

    .icon vaadin-icon {
      --vaadin-icon-width: var(--lumo-font-size-xxs);
      --vaadin-icon-height: var(--lumo-font-size-xxs);
    }

    @media (min-width: 1024px) {
      .title {
        font-size: var(--lumo-font-size-xxs);
      }

      .current {
        font-size: var(--lumo-font-size-xl);
      }

      .icon {
        font-size: var(--lumo-font-size-m);
      }

      .icon vaadin-icon {
        --vaadin-icon-width: var(--lumo-font-size-xs);
        --vaadin-icon-height: var(--lumo-font-size-xs);
      }
    }
  `;

  @property()
  title = 'Unknown';

  @property()
  current = '0';

  @property({ type: Number })
  change = 0;

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    let theme;
    let icon;
    let sign;

    if (this.change === 0) {
      theme = '';
      icon = 'circle-thin';
      sign = '±';
    } else if (this.change < 0) {
      theme = 'error';
      icon = 'arrow-down';
      sign = '-';
    } else {
      theme = 'success';
      icon = 'arrow-up';
      sign = '+';
    }

    return html`
      <vaadin-vertical-layout>
        <div class="title">${this.title}</div>
        <div class="current">${this.current}</div>
        <span class="icon" theme="badge ${theme}">
          <vaadin-icon icon="vaadin:${icon}"></vaadin-icon>
          <span>${sign}${Math.abs(this.change).toFixed(2)}%</span>
        </span>
      </vaadin-vertical-layout>
    `;
  }
}
example-indicator.ts
example-chart.tsimport { css, html, LitElement } from 'lit';
import { customElement, state } from 'lit/decorators.js';
import { repeat } from 'lit/directives/repeat.js';
import '@vaadin/charts';

const monthNames = [
  'Jan',
  'Feb',
  'Mar',
  'Apr',
  'May',
  'Jun',
  'Jul',
  'Aug',
  'Sep',
  'Oct',
  'Nov',
  'Dec',
];

const chartOptions = {
  xAxis: { crosshair: true },
  yAxis: { min: 0 },
};

@customElement('example-chart')
export class Example extends LitElement {
  static override styles = css`
    .title {
      font-size: var(--lumo-font-size-l);
      font-weight: 700;
      margin-block-end: var(--lumo-space-m);
    }
  `;

  @state()
  private events: ViewEvent[] = [];

  protected override async firstUpdated() {
    this.events = await getViewEvents();
  }

  protected override render() {
    return html`
      <header class="title">View events</header>
      <vaadin-chart .additionalOptions="${chartOptions}" .categories="${monthNames}" type="area">
        ${repeat(
          this.events,
          ({ id }) => id,
          ({ city, data }) =>
            html`<vaadin-chart-series .title="${city}" .values="${data}"></vaadin-chart-series>`
        )}
      </vaadin-chart>
    `;
  }
}
example-chart.ts
BoardBasic.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.board.Board;
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.router.Route;

@Route("board-basic")
public class BoardBasic extends Div {

    public BoardBasic() {
        // tag::snippet[]
        Board board = new Board();
        board.addRow(new ExampleIndicator("Current users", "745", "+33.7"),
                new ExampleIndicator("View events", "54.6k", "-112.45"),
                new ExampleIndicator("Conversion rate", "18%", "+3.9"),
                new ExampleIndicator("Custom metric", "-123.45"));
        board.addRow(new ExampleChart());
        // end::snippet[]

        add(board);
        addClassName("basic-board");
    }

}
ExampleIndicator.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.Component;
import com.vaadin.flow.component.Tag;

@Tag("example-indicator")
public class ExampleIndicator extends Component {
    public ExampleIndicator(String title, String current, String change) {
        this.getElement().setAttribute("title", title)
                .setAttribute("current", current)
                .setAttribute("change", change);
    }

    public ExampleIndicator(String title, String current) {
        this.getElement().setAttribute("title", title).setAttribute("current",
                current);
    }
}
ExampleIndicator.java
ExampleChart.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.Component;
import com.vaadin.flow.component.Tag;

@Tag("example-chart")
public class ExampleChart extends Component {
}
ExampleChart.java

Use Board to create responsive views and dashboards that work on any screen size.

Responsive

Board is responsive by default, meaning that it doesn’t require any custom development. Its layout is automatically optimized and adjusted based on the screen size, ensuring that the components utilize all available space.

Rows & Columns

Board is made up of rows. Each row supports up to four columns and can contain up to four components.

Nested Rows

Rows can be nested for finer-grained control of how certain areas of the layout behave on resize, and how they are rendered.

Open in a
new tab

Source code

board-nested.tsimport { html, LitElement } from 'lit';
import { customElement } from 'lit/decorators.js';
import '@vaadin/board';
import { applyTheme } from 'Frontend/generated/theme';
import './example-indicator';
import './example-statistics';

@customElement('board-nested')
export class Example extends LitElement {
  constructor() {
    super();
    this.classList.add('board-nested');
  }

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <!-- tag::snippet[] -->
      <vaadin-board>
        <vaadin-board-row>
          <example-statistics board-cols="2"></example-statistics>
          <vaadin-board-row board-cols="1">
            <example-indicator
              current="745"
              change="+33.7"
              title="Current users"
            ></example-indicator>
            <example-indicator
              current="18%"
              change="+3.9"
              title="Conversion rate"
            ></example-indicator>
          </vaadin-board-row>
        </vaadin-board-row>
      </vaadin-board>
      <!-- end::snippet[] -->
    `;
  }
}
example-indicator.tsimport { applyTheme } from 'Frontend/generated/theme';
import { css, html, LitElement } from 'lit';
import { customElement, property } from 'lit/decorators.js';
import '@vaadin/icon';
import '@vaadin/icons';
import '@vaadin/vertical-layout';

@customElement('example-indicator')
export class ExampleIndicator extends LitElement {
  static override styles = css`
    .title {
      margin: 0;
      font-size: var(--lumo-font-size-xxs);
      font-weight: 700;
      color: var(--lumo-contrast-50pct);
    }

    .current {
      font-size: var(--lumo-font-size-m);
      font-weight: 700;
    }

    .icon {
      font-size: var(--lumo-font-size-xxs);
    }

    .icon vaadin-icon {
      --vaadin-icon-width: var(--lumo-font-size-xxs);
      --vaadin-icon-height: var(--lumo-font-size-xxs);
    }

    @media (min-width: 1024px) {
      .title {
        font-size: var(--lumo-font-size-xxs);
      }

      .current {
        font-size: var(--lumo-font-size-xl);
      }

      .icon {
        font-size: var(--lumo-font-size-m);
      }

      .icon vaadin-icon {
        --vaadin-icon-width: var(--lumo-font-size-xs);
        --vaadin-icon-height: var(--lumo-font-size-xs);
      }
    }
  `;

  @property()
  title = 'Unknown';

  @property()
  current = '0';

  @property({ type: Number })
  change = 0;

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    let theme;
    let icon;
    let sign;

    if (this.change === 0) {
      theme = '';
      icon = 'circle-thin';
      sign = '±';
    } else if (this.change < 0) {
      theme = 'error';
      icon = 'arrow-down';
      sign = '-';
    } else {
      theme = 'success';
      icon = 'arrow-up';
      sign = '+';
    }

    return html`
      <vaadin-vertical-layout>
        <div class="title">${this.title}</div>
        <div class="current">${this.current}</div>
        <span class="icon" theme="badge ${theme}">
          <vaadin-icon icon="vaadin:${icon}"></vaadin-icon>
          <span>${sign}${Math.abs(this.change).toFixed(2)}%</span>
        </span>
      </vaadin-vertical-layout>
    `;
  }
}
example-indicator.ts
example-chart.tsimport { css, html, LitElement } from 'lit';
import { customElement, state } from 'lit/decorators.js';
import { repeat } from 'lit/directives/repeat.js';
import '@vaadin/charts';

const monthNames = [
  'Jan',
  'Feb',
  'Mar',
  'Apr',
  'May',
  'Jun',
  'Jul',
  'Aug',
  'Sep',
  'Oct',
  'Nov',
  'Dec',
];

const chartOptions = {
  xAxis: { crosshair: true },
  yAxis: { min: 0 },
};

@customElement('example-chart')
export class Example extends LitElement {
  static override styles = css`
    .title {
      font-size: var(--lumo-font-size-l);
      font-weight: 700;
      margin-block-end: var(--lumo-space-m);
    }
  `;

  @state()
  private events: ViewEvent[] = [];

  protected override async firstUpdated() {
    this.events = await getViewEvents();
  }

  protected override render() {
    return html`
      <header class="title">View events</header>
      <vaadin-chart .additionalOptions="${chartOptions}" .categories="${monthNames}" type="area">
        ${repeat(
          this.events,
          ({ id }) => id,
          ({ city, data }) =>
            html`<vaadin-chart-series .title="${city}" .values="${data}"></vaadin-chart-series>`
        )}
      </vaadin-chart>
    `;
  }
}
example-chart.ts
BoardNested.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.board.Board;
import com.vaadin.flow.component.board.Row;
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.router.Route;

@Route("board-nested")
public class BoardNested extends Div {
    public BoardNested() {
        // tag::snippet[]
        Row rootRow = new Row();
        rootRow.add(new ExampleStatistics(), 2);

        Row nestedRow = new Row(
                new ExampleIndicator("Current users", "745", "+33.7"),
                new ExampleIndicator("Conversion rate", "18%", "+3.9"));
        rootRow.addNestedRow(nestedRow);

        Board board = new Board();
        board.add(rootRow);
        // end::snippet[]

        add(board);
        this.setClassName("board-nested");
    }

}
ExampleIndicator.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.Component;
import com.vaadin.flow.component.Tag;

@Tag("example-indicator")
public class ExampleIndicator extends Component {
    public ExampleIndicator(String title, String current, String change) {
        this.getElement().setAttribute("title", title)
                .setAttribute("current", current)
                .setAttribute("change", change);
    }

    public ExampleIndicator(String title, String current) {
        this.getElement().setAttribute("title", title).setAttribute("current",
                current);
    }
}
ExampleIndicator.java
ExampleChart.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.Component;
import com.vaadin.flow.component.Tag;

@Tag("example-chart")
public class ExampleChart extends Component {
}
ExampleChart.java

Column Wrapping

Columns automatically wrap on to new lines as the viewport narrows. The wrapping behavior for a row with four columns and four components is shown below.

Important

Use the draggable split handle to resize the layout and see how the columns wrap.

Open in a
new tab

Source code

board-column-wrapping.tsimport { html, LitElement } from 'lit';
import { customElement } from 'lit/decorators.js';
import '@vaadin/board';
import '@vaadin/split-layout';
import { applyTheme } from 'Frontend/generated/theme';

@customElement('board-column-wrapping')
export class Example extends LitElement {
  constructor() {
    super();
    this.classList.add('board-column-wrapping');
  }

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <!-- tag::snippet[] -->
      <vaadin-split-layout>
        <vaadin-board style="width: 100%">
          <vaadin-board-row class="row">
            <div class="cell color">Cell 1</div>
            <div class="cell color">Cell 2</div>
            <div class="cell color">Cell 3</div>
            <div class="cell color">Cell 4</div>
          </vaadin-board-row>
        </vaadin-board>
        <div></div>
      </vaadin-split-layout>
      <!-- end::snippet[] -->
    `;
  }
}
BoardColumnWrapping.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.board.Board;
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.component.splitlayout.SplitLayout;
import com.vaadin.flow.router.Route;

@Route("board-column-wrapping")
public class BoardColumnWrapping extends Div {

    public BoardColumnWrapping() {
        // tag::snippet[]
        Board board = new Board();
        board.addRow(createCell("Cell 1"), createCell("Cell 2"),
                createCell("Cell 3"), createCell("Cell 4"));

        SplitLayout splitLayout = new SplitLayout(board, new Div());
        // end::snippet[]

        addClassName("board-column-wrapping");
        add(splitLayout);
    }

    private static Div createCell(String text) {
        Div div = new Div();
        div.setText(text);
        div.addClassNames("cell", "color");

        return div;
    }

}

Column Span

By default, the components in a row share the space equally. A component can be made to stretch across two or three columns by setting its column span.

The possible combinations are shown below:

Open in a
new tab

Source code

board-column-span.tsimport { html, LitElement } from 'lit';
import { customElement } from 'lit/decorators.js';
import '@vaadin/board';
import { applyTheme } from 'Frontend/generated/theme';

@customElement('board-column-span')
export class Example extends LitElement {
  constructor() {
    super();
    this.classList.add('board-column-span');
  }

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  protected override render() {
    return html`
      <!-- tag::snippet[] -->
      <vaadin-board>
        <vaadin-board-row>
          <div class="cell" board-cols="2">Span 2</div>
          <div class="cell">Span 1</div>
          <div class="cell">Span 1</div>
        </vaadin-board-row>
        <vaadin-board-row>
          <div class="cell">Span 1</div>
          <div class="cell" board-cols="2">Span 2</div>
          <div class="cell">Span 1</div>
        </vaadin-board-row>
        <vaadin-board-row>
          <div class="cell">Span 1</div>
          <div class="cell">Span 1</div>
          <div class="cell" board-cols="2">Span 2</div>
        </vaadin-board-row>
      </vaadin-board>
      <vaadin-board>
        <vaadin-board-row>
          <div class="cell" board-cols="3">Span 3</div>
          <div class="cell">Span 1</div>
        </vaadin-board-row>
        <vaadin-board-row>
          <div class="cell">Span 1</div>
          <div class="cell" board-cols="3">Span 3</div>
        </vaadin-board-row>
      </vaadin-board>
      <vaadin-board>
        <vaadin-board-row>
          <div class="cell" board-cols="2">Span 2</div>
          <div class="cell">Span 1</div>
        </vaadin-board-row>
        <vaadin-board-row>
          <div class="cell">Span 1</div>
          <div class="cell" board-cols="2">Span 2</div>
        </vaadin-board-row>
      </vaadin-board>
      <!-- end::snippet[] -->
    `;
  }
}
BoardColumnSpan.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.board.Board;
import com.vaadin.flow.component.board.Row;
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.router.Route;

@Route("board-column-span")
public class BoardColumnSpan extends Div {

    public BoardColumnSpan() {
        // tag::snippet[]
        Board board1 = createBoard1();
        Board board2 = createBoard2();
        Board board3 = createBoard3();
        // end::snippet[]

        addClassName("board-column-span");
        add(board1, board2, board3);
    }

    private static Board createBoard1() {
        Row row1 = new Row();
        row1.add(createCell("Span 2"), 2);
        row1.add(createCell("Span 1"));
        row1.add(createCell("Span 1"));

        Row row2 = new Row();
        row2.add(createCell("Span 1"));
        row2.add(createCell("Span 2"), 2);
        row2.add(createCell("Span 1"));

        Row row3 = new Row();
        row3.add(createCell("Span 1"));
        row3.add(createCell("Span 1"));
        row3.add(createCell("Span 2"), 2);

        Board board = new Board();
        board.add(row1, row2, row3);

        return board;
    }

    private static Board createBoard2() {
        Row row1 = new Row();
        row1.add(createCell("Span 3"), 3);
        row1.add(createCell("Span 1"));

        Row row2 = new Row();
        row2.add(createCell("Span 1"));
        row2.add(createCell("Span 3"), 3);

        Board board = new Board();
        board.add(row1, row2);

        return board;
    }

    private static Board createBoard3() {
        Row row1 = new Row();
        row1.add(createCell("Span 2"), 2);
        row1.add(createCell("Span 1"));

        Row row2 = new Row();
        row2.add(createCell("Span 1"));
        row2.add(createCell("Span 2"), 2);

        Board board = new Board();
        board.add(row1, row2);

        return board;
    }

    private static Div createCell(String text) {
        Div div = new Div();
        div.setText(text);
        div.addClassNames("cell");

        return div;
    }

}

Breakpoints

Board adjusts its layout based on the layout container width. The following three container widths, called breakpoints, trigger a layout change:

Breakpoint	Container width	Max number of columns
large	≥ 960 pixels	4
medium	600–959 pixels	2 or 3^[1]
small	< 600 pixels	1

Breakpoint

Container width

Max number of columns

large

≥ 960 pixels

medium

600–959 pixels

2 or 3^[1]

small

< 600 pixels

Breakpoints can be customized by overriding the CSS custom properties --vaadin-board-width-small and --vaadin-board-width-medium.

Breakpoint-Specific Styling

You can apply different styles for each breakpoint, for example to change the font size and space between components.

Important

Use the draggable split handle to resize the layout and see how the board styling changes at different breakpoints.

Open in a
new tab

Source code

board-breakpoints.tsimport { html, LitElement } from 'lit';
import { customElement } from 'lit/decorators.js';
import '@vaadin/board';
import '@vaadin/split-layout';
import { applyTheme } from 'Frontend/generated/theme';

@customElement('board-breakpoints')
export class Example extends LitElement {
  constructor() {
    super();
    this.classList.add('board-breakpoints');
  }

  protected override createRenderRoot() {
    const root = super.createRenderRoot();
    // Apply custom theme (only supported if your app uses one)
    applyTheme(root);
    return root;
  }

  // tag::snippet[]
  protected override render() {
    return html`
      <vaadin-split-layout>
        <vaadin-board style="width: 100%">
          <!-- styles are defined separately, check the board.css snippet -->
          <vaadin-board-row>
            <div class="cell">Cell 1</div>
            <div class="cell">Cell 2</div>
            <div class="cell">Cell 3</div>
            <div class="cell">Cell 4</div>
          </vaadin-board-row>
        </vaadin-board>
        <div></div>
      </vaadin-split-layout>
    `;
  }
  // end::snippet[]
}
board.css/****************************
 * board basic
 ****************************/
.basic-board,
:host(.basic-board) {
    --board-border: 1px solid var(--lumo-contrast-10pct);
    --vaadin-board-width-small: 200px;
    --vaadin-board-width-medium: 400px;
}

.basic-board vaadin-board-row:not(:last-child),
:host(.basic-board) vaadin-board-row:not(:last-child) {
    border-block-end: var(--board-border);
}

.basic-board example-indicator,
:host(.basic-board) example-indicator {
    padding: var(--lumo-space-m);
}

.basic-board example-indicator:not(:nth-child(2n)),
:host(.basic-board) example-indicator:not(:nth-child(2n)) {
    border-inline-end: var(--board-border);
}

@media (min-width: 1024px) {
    .basic-board,
    :host(.basic-board) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }

    .basic-board example-indicator:not(:last-child),
    :host(.basic-board) example-indicator:not(:last-child) {
        border-inline-end: var(--board-border);
    }
}

/****************************
 * board nested
 ****************************/
.board-nested,
:host(.board-nested) {
    --board-border: 1px solid var(--lumo-contrast-10pct);
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
}

.board-nested example-statistics,
:host(.board-nested) example-statistics {
    padding-inline-end: var(--lumo-space-m);
    border-inline-end: var(--board-border);
}

.board-nested example-indicator,
:host(.board-nested) example-indicator {
    padding: var(--lumo-space-s);
}

.board-nested example-indicator:first-child,
:host(.board-nested) example-indicator:first-child {
    border-block-end: var(--board-border);
}

@media (min-width: 1024px) {
    .board-nested example-indicator,
    :host(.board-nested) example-indicator {
        padding: var(--lumo-space-m);
    }

    .board-nested,
    :host(.board-nested) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

/****************************
 * board-column-wrapping
 ****************************/
.board-column-wrapping,
:host(.board-column-wrapping) {
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
    --board-blue-10: #0090c0;
    --board-blue-20: #006c90;
    --board-blue-30: #00506b;
    --board-blue-40: #003e53;
}

@media (min-width: 1024px) {
    .board-column-wrapping,
    :host(.board-column-wrapping) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

.board-column-wrapping .cell,
:host(.board-column-wrapping) .cell {
    padding: 1em 0.3em;
    text-align: center;
    color: white;
    white-space: nowrap;
}

@media (min-width: 1024px) {
    .board-column-wrapping .cell,
    :host(.board-column-wrapping) .cell {
        padding: 1em;
    }
}

.board-column-wrapping .color:nth-child(1),
:host(.board-column-wrapping) .color:nth-child(1) {
    background: var(--board-blue-40);
}

.board-column-wrapping .color:nth-child(2),
:host(.board-column-wrapping) .color:nth-child(2) {
    background: var(--board-blue-30);
}

.board-column-wrapping .color:nth-child(3),
:host(.board-column-wrapping) .color:nth-child(3) {
    background: var(--board-blue-20);
}

.board-column-wrapping .color:nth-child(4),
:host(.board-column-wrapping) .color:nth-child(4) {
    background: var(--board-blue-10);
}

/****************************
 * board-column-span
 ****************************/
.board-column-span,
:host(.board-column-span) {
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
    --board-blue-10: #0090c0;
    --board-blue-20: #006c90;
    --board-blue-30: #00506b;
    --board-blue-40: #003e53;
    --board-inner-border: 1px dashed white;
}

@media (min-width: 1024px) {
    .board-column-span,
    :host(.board-column-span) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

.board-column-span vaadin-board,
:host(.board-column-span) vaadin-board {
    padding: var(--lumo-space-m) 0;
}

.board-column-span .cell,
:host(.board-column-span) .cell {
    padding: 1em 0.3em;
    text-align: center;
    color: white;
    white-space: nowrap;

    background: var(--board-blue-20);
}

@media (min-width: 1024px) {
    .board-column-span .cell,
    :host(.board-column-span) .cell {
        padding: 1em;
    }
}

.board-column-span .color:nth-child(1),
:host(.board-column-span) .color:nth-child(1) {
    background: var(--board-blue-40);
}

.board-column-span .color:nth-child(2),
:host(.board-column-span) .color:nth-child(2) {
    background: var(--board-blue-30);
}

.board-column-span .color:nth-child(3),
:host(.board-column-span) .color:nth-child(3) {
    background: var(--board-blue-20);
}

.board-column-span .color:nth-child(4),
:host(.board-column-span) .color:nth-child(4) {
    background: var(--board-blue-10);
}

.board-column-span .cell[board-cols='3'],
:host(.board-column-span) .cell[board-cols='3'] {
    background: var(--board-blue-40);
}

.board-column-span .cell[board-cols='2'],
:host(.board-column-span) .cell[board-cols='2'] {
    background: var(--board-blue-30);
}

.board-column-span .cell:not(:last-child),
:host(.board-column-span) .cell:not(:last-child) {
    border-inline-end: var(--board-inner-border);
}

.board-column-span vaadin-board-row:not(:last-child) .cell,
:host(.board-column-span) vaadin-board-row:not(:last-child) .cell {
    border-block-end: var(--board-inner-border);
}

/****************************
 * board-breakpoints
 ****************************/
.board-breakpoints,
:host(.board-breakpoints) {
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
}

@media (min-width: 1024px) {
    .board-breakpoints,
    :host(.board-breakpoints) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

.board-breakpoints vaadin-board-row.large > .cell,
:host(.board-breakpoints)
    /* tag::breakpoint[] */
/* should be added to frontend/theme/[my-theme]/styles.css */
vaadin-board-row.large > .cell {
    background: var(--lumo-success-color-10pct);
    color: var(--lumo-success-color);
}

/* end::breakpoint[] */

.board-breakpoints vaadin-board-row.medium > .cell,
:host(.board-breakpoints)
    /* tag::breakpoint[] */
vaadin-board-row.medium > .cell {
    background: var(--lumo-primary-color-10pct);
    color: var(--lumo-primary-color);
}

/* end::breakpoint[] */

.board-breakpoints vaadin-board-row.small > .cell,
:host(.board-breakpoints)
    /* tag::breakpoint[] */
vaadin-board-row.small > .cell {
    background: var(--lumo-error-color-10pct);
    color: var(--lumo-error-color);
}

/* end::breakpoint[] */

.board-breakpoints .cell,
:host(.board-breakpoints) .cell {
    padding: 1em 0.3em;
    text-align: center;
    color: white;
    white-space: nowrap;
}

@media (min-width: 1024px) {
    .board-breakpoints .cell,
    :host(.board-breakpoints) .cell {
        padding: 1em;
    }
}
BoardBreakpoints.javapackage com.vaadin.demo.component.board;

import com.vaadin.flow.component.board.Board;
import com.vaadin.flow.component.html.Div;
import com.vaadin.flow.component.splitlayout.SplitLayout;
import com.vaadin.flow.router.Route;

@Route("board-breakpoints")
public class BoardBreakpoints extends Div {
    public BoardBreakpoints() {
        // tag::snippet[]
        Board board = new Board();

        // styles are defined separately, check the board.css snippet
        board.addRow(createCell("Cell 1"), createCell("Cell 2"),
                createCell("Cell 3"), createCell("Cell 4"));

        SplitLayout splitLayout = new SplitLayout(board, new Div());
        // end::snippet[]

        addClassName("board-breakpoints");
        add(splitLayout);
    }

    private Div createCell(String text) {
        Div div = new Div();
        div.setText(text);
        div.addClassNames("cell");
        return div;
    }

}
board.css/****************************
 * board basic
 ****************************/
.basic-board,
:host(.basic-board) {
    --board-border: 1px solid var(--lumo-contrast-10pct);
    --vaadin-board-width-small: 200px;
    --vaadin-board-width-medium: 400px;
}

.basic-board vaadin-board-row:not(:last-child),
:host(.basic-board) vaadin-board-row:not(:last-child) {
    border-block-end: var(--board-border);
}

.basic-board example-indicator,
:host(.basic-board) example-indicator {
    padding: var(--lumo-space-m);
}

.basic-board example-indicator:not(:nth-child(2n)),
:host(.basic-board) example-indicator:not(:nth-child(2n)) {
    border-inline-end: var(--board-border);
}

@media (min-width: 1024px) {
    .basic-board,
    :host(.basic-board) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }

    .basic-board example-indicator:not(:last-child),
    :host(.basic-board) example-indicator:not(:last-child) {
        border-inline-end: var(--board-border);
    }
}

/****************************
 * board nested
 ****************************/
.board-nested,
:host(.board-nested) {
    --board-border: 1px solid var(--lumo-contrast-10pct);
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
}

.board-nested example-statistics,
:host(.board-nested) example-statistics {
    padding-inline-end: var(--lumo-space-m);
    border-inline-end: var(--board-border);
}

.board-nested example-indicator,
:host(.board-nested) example-indicator {
    padding: var(--lumo-space-s);
}

.board-nested example-indicator:first-child,
:host(.board-nested) example-indicator:first-child {
    border-block-end: var(--board-border);
}

@media (min-width: 1024px) {
    .board-nested example-indicator,
    :host(.board-nested) example-indicator {
        padding: var(--lumo-space-m);
    }

    .board-nested,
    :host(.board-nested) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

/****************************
 * board-column-wrapping
 ****************************/
.board-column-wrapping,
:host(.board-column-wrapping) {
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
    --board-blue-10: #0090c0;
    --board-blue-20: #006c90;
    --board-blue-30: #00506b;
    --board-blue-40: #003e53;
}

@media (min-width: 1024px) {
    .board-column-wrapping,
    :host(.board-column-wrapping) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

.board-column-wrapping .cell,
:host(.board-column-wrapping) .cell {
    padding: 1em 0.3em;
    text-align: center;
    color: white;
    white-space: nowrap;
}

@media (min-width: 1024px) {
    .board-column-wrapping .cell,
    :host(.board-column-wrapping) .cell {
        padding: 1em;
    }
}

.board-column-wrapping .color:nth-child(1),
:host(.board-column-wrapping) .color:nth-child(1) {
    background: var(--board-blue-40);
}

.board-column-wrapping .color:nth-child(2),
:host(.board-column-wrapping) .color:nth-child(2) {
    background: var(--board-blue-30);
}

.board-column-wrapping .color:nth-child(3),
:host(.board-column-wrapping) .color:nth-child(3) {
    background: var(--board-blue-20);
}

.board-column-wrapping .color:nth-child(4),
:host(.board-column-wrapping) .color:nth-child(4) {
    background: var(--board-blue-10);
}

/****************************
 * board-column-span
 ****************************/
.board-column-span,
:host(.board-column-span) {
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
    --board-blue-10: #0090c0;
    --board-blue-20: #006c90;
    --board-blue-30: #00506b;
    --board-blue-40: #003e53;
    --board-inner-border: 1px dashed white;
}

@media (min-width: 1024px) {
    .board-column-span,
    :host(.board-column-span) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

.board-column-span vaadin-board,
:host(.board-column-span) vaadin-board {
    padding: var(--lumo-space-m) 0;
}

.board-column-span .cell,
:host(.board-column-span) .cell {
    padding: 1em 0.3em;
    text-align: center;
    color: white;
    white-space: nowrap;

    background: var(--board-blue-20);
}

@media (min-width: 1024px) {
    .board-column-span .cell,
    :host(.board-column-span) .cell {
        padding: 1em;
    }
}

.board-column-span .color:nth-child(1),
:host(.board-column-span) .color:nth-child(1) {
    background: var(--board-blue-40);
}

.board-column-span .color:nth-child(2),
:host(.board-column-span) .color:nth-child(2) {
    background: var(--board-blue-30);
}

.board-column-span .color:nth-child(3),
:host(.board-column-span) .color:nth-child(3) {
    background: var(--board-blue-20);
}

.board-column-span .color:nth-child(4),
:host(.board-column-span) .color:nth-child(4) {
    background: var(--board-blue-10);
}

.board-column-span .cell[board-cols='3'],
:host(.board-column-span) .cell[board-cols='3'] {
    background: var(--board-blue-40);
}

.board-column-span .cell[board-cols='2'],
:host(.board-column-span) .cell[board-cols='2'] {
    background: var(--board-blue-30);
}

.board-column-span .cell:not(:last-child),
:host(.board-column-span) .cell:not(:last-child) {
    border-inline-end: var(--board-inner-border);
}

.board-column-span vaadin-board-row:not(:last-child) .cell,
:host(.board-column-span) vaadin-board-row:not(:last-child) .cell {
    border-block-end: var(--board-inner-border);
}

/****************************
 * board-breakpoints
 ****************************/
.board-breakpoints,
:host(.board-breakpoints) {
    --vaadin-board-width-small: 150px;
    --vaadin-board-width-medium: 220px;
}

@media (min-width: 1024px) {
    .board-breakpoints,
    :host(.board-breakpoints) {
        --vaadin-board-width-small: 300px;
        --vaadin-board-width-medium: 400px;
    }
}

.board-breakpoints vaadin-board-row.large > .cell,
:host(.board-breakpoints)
    /* tag::breakpoint[] */
/* should be added to frontend/theme/[my-theme]/styles.css */
vaadin-board-row.large > .cell {
    background: var(--lumo-success-color-10pct);
    color: var(--lumo-success-color);
}

/* end::breakpoint[] */

.board-breakpoints vaadin-board-row.medium > .cell,
:host(.board-breakpoints)
    /* tag::breakpoint[] */
vaadin-board-row.medium > .cell {
    background: var(--lumo-primary-color-10pct);
    color: var(--lumo-primary-color);
}

/* end::breakpoint[] */

.board-breakpoints vaadin-board-row.small > .cell,
:host(.board-breakpoints)
    /* tag::breakpoint[] */
vaadin-board-row.small > .cell {
    background: var(--lumo-error-color-10pct);
    color: var(--lumo-error-color);
}

/* end::breakpoint[] */

.board-breakpoints .cell,
:host(.board-breakpoints) .cell {
    padding: 1em 0.3em;
    text-align: center;
    color: white;
    white-space: nowrap;
}

@media (min-width: 1024px) {
    .board-breakpoints .cell,
    :host(.board-breakpoints) .cell {
        padding: 1em;
    }
}

C2E98F9B-DC19-4C1D-8538-843235BA8701

1. A row with three equal-width components doesn’t wrap until the small breakpoint.

Documentation

Documentation

Board

Responsive

Rows & Columns

Nested Rows

Column Wrapping

Column Span

Breakpoints

Breakpoint-Specific Styling