Bootstrap 5 Callout

Callout

Callouts provide presentation of content in a visually distinct manner. Includes a heading, icon and typically text-based content.

🤖 Looking for the LLM-optimized version? View llm.md

Other frameworks

CoreUI components are available as native Angular, React, and Vue components. To learn more please visit the following pages.

On this page

Examples

Callout component is prepared for any length of text, as well as an optional elements like icons, headings, etc. For a styling, use one of the required contextual classes (e.g., .callout-success).

New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.

html

<div class="callout callout-primary">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-secondary">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-success">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-danger">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-warning">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-info">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-light">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>
<div class="callout callout-dark">
  New to or unfamiliar with flexbox? Read this CSS Tricks flexbox guide for background, terminology, guidelines, and code snippets.
</div>

Conveying meaning to assistive technologies

Relying on color to convey meaning creates a visual cue that assistive technologies, like screen readers, cannot perceive. It's essential that any information represented by color is either apparent from the content itself (e.g., the visible text) or supplemented by alternative methods, such as extra text using the .visually-hidden class.

Customizing

CSS variables

Callouts use local CSS variables on .callout for enhanced real-time customization. Values for the CSS variables are set via Sass, so Sass customization is still supported, too.

scss/_callout.scss

--cui-callout-padding-x: #{$callout-padding-x};
--cui-callout-padding-y: #{$callout-padding-y};
--cui-callout-margin-x: #{$callout-margin-x};
--cui-callout-margin-y: #{$callout-margin-y};
--cui-callout-border-width: #{$callout-border-width};
--cui-callout-border-color: #{$callout-border-color};
--cui-callout-border-left-width: #{$callout-border-left-width};
--cui-callout-border-radius: #{$callout-border-radius};

SASS variables

scss/_variables.scss

$callout-padding-y:                 $spacer;
$callout-padding-x:                 $spacer;
$callout-margin-y:                  $spacer;
$callout-margin-x:                  0;
$callout-border-radius:             var(--#{$prefix}border-radius);
$callout-border-width:              var(--#{$prefix}border-width);
$callout-border-color:              var(--#{$prefix}border-color);
$callout-border-left-width:         calc(#{$callout-border-width} * 4); // stylelint-disable-line function-disallowed-list

$callout-variants: (
  "primary":    $primary,
  "secondary":  $secondary,
  "success":    $success,
  "danger":     $danger,
  "warning":    $warning,
  "info":       $info,
  "light":      $light,
  "dark":       $dark
);

Variants

Check out our Sass maps and loops docs for how to customize these loops and extend CoreUI’s base-modifier approach to your own code.

Modifiers

CoreUI’s callout component is built with a base-modifier class approach. This means the bulk of the styling is contained to a base class .callout while style variations are confined to modifier classes (e.g., .callout-danger). These modifier classes are built from the $callout-variants map to make customizing the number and name of our modifier classes.

scss/_callout.scss

// Generate contextual modifier classes for colorizing the collor.
@each $state, $value in $callout-variants {
  .callout-#{$state} {
    --#{$prefix}callout-border-left-color: #{$value};
  }
}