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Accordion

Build vertically collapsing accordions in combination with our Collapse JavaScript plugin.

How it works

The accordion uses collapse internally to make it collapsible. To render an accordion that’s expanded, add the .open class on the .accordion.

The animation effect of this component is dependent on the prefers-reduced-motion media query. See the reduced motion section of our accessibility documentation.

Example

Click the accordions below to expand/collapse the accordion content.

This is the first item's accordion body. It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.

This is the second item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.

This is the third item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.
html 
<div class="accordion" id="accordionExample">
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
        Accordion Item #1
        <div class="supporting-label">Supporting Label</div>
      </button>
    </h2>
    <div id="collapseOne" class="accordion-collapse collapse show" data-bs-parent="#accordionExample">
      <div class="accordion-body">
        <strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="collapseTwo" class="accordion-collapse collapse" data-bs-parent="#accordionExample">
      <div class="accordion-body">
        <strong>This is the second item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="collapseThree" class="accordion-collapse collapse" data-bs-parent="#accordionExample">
      <div class="accordion-body">
        <strong>This is the third item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
</div>

Flush

Add .accordion-flush to remove some borders and rounded corners to render accordions edge-to-edge with their parent container.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-flush class. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-flush class. This is the second item's accordion body. Let's imagine this being filled with some actual content.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-flush class. This is the third item's accordion body. Nothing more exciting happening here in terms of content, but just filling up the space to make it look, at least at first glance, a bit more representative of how this would look in a real-world application.
html 
<div class="accordion accordion-flush" id="accordionFlushExample">
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#flush-collapseOne" aria-expanded="false" aria-controls="flush-collapseOne">
        Accordion Item #1
      </button>
    </h2>
    <div id="flush-collapseOne" class="accordion-collapse collapse" data-bs-parent="#accordionFlushExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-flush</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#flush-collapseTwo" aria-expanded="false" aria-controls="flush-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="flush-collapseTwo" class="accordion-collapse collapse" data-bs-parent="#accordionFlushExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-flush</code> class. This is the second item's accordion body. Let's imagine this being filled with some actual content.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#flush-collapseThree" aria-expanded="false" aria-controls="flush-collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="flush-collapseThree" class="accordion-collapse collapse" data-bs-parent="#accordionFlushExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-flush</code> class. This is the third item's accordion body. Nothing more exciting happening here in terms of content, but just filling up the space to make it look, at least at first glance, a bit more representative of how this would look in a real-world application.</div>
    </div>
  </div>
</div>

Always open

Omit the data-bs-parent attribute on each .accordion-collapse to make accordion items stay open when another item is opened.

This is the first item's accordion body. It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.

This is the second item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.

This is the third item's accordion body. It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the .accordion-body, though the transition does limit overflow.
html 
<div class="accordion" id="accordionPanelsStayOpenExample">
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseOne" aria-expanded="true" aria-controls="panelsStayOpen-collapseOne">
        Accordion Item #1
      </button>
    </h2>
    <div id="panelsStayOpen-collapseOne" class="accordion-collapse collapse show">
      <div class="accordion-body">
        <strong>This is the first item's accordion body.</strong> It is shown by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseTwo" aria-expanded="false" aria-controls="panelsStayOpen-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="panelsStayOpen-collapseTwo" class="accordion-collapse collapse">
      <div class="accordion-body">
        <strong>This is the second item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseThree" aria-expanded="false" aria-controls="panelsStayOpen-collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="panelsStayOpen-collapseThree" class="accordion-collapse collapse">
      <div class="accordion-body">
        <strong>This is the third item's accordion body.</strong> It is hidden by default, until the collapse plugin adds the appropriate classes that we use to style each element. These classes control the overall appearance, as well as the showing and hiding via CSS transitions. You can modify any of this with custom CSS or overriding our default variables. It's also worth noting that just about any HTML can go within the <code>.accordion-body</code>, though the transition does limit overflow.
      </div>
    </div>
  </div>
</div>

Individual Accordion Items

Placeholder content for this accordion, which is intended to demonstrate the .accordion-small class. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-small class. This is the first item's accordion body.
html 
<div class="accordion mb-3">
  <div class="accordion-item">
    <h2 class="accordion-header" id="individual-headingOne">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#individual-collapseOne" aria-expanded="false" aria-controls="individual-collapseOne">
        Accordion Item #1
        <div class="supporting-label">Supporting Label</div>
      </button>
    </h2>
    <div id="individual-collapseOne" class="accordion-collapse collapse" aria-labelledby="individual-headingOne">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-small</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
</div>

<div class="accordion mb-3">
  <div class="accordion-item">
    <h2 class="accordion-header" id="individual-headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#individual-collapseTwo" aria-expanded="false" aria-controls="individual-collapseTwo">
        Accordion Item #1
      </button>
    </h2>
    <div id="individual-collapseTwo" class="accordion-collapse collapse" aria-labelledby="individual-headingTwo">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-small</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
</div>

Small Variant

Add .accordion-sm for small version.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-small class. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-sm class. This is the second item's accordion body. Let's imagine this being filled with some actual content.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-sm class. This is the third item's accordion body. Nothing more exciting happening here in terms of content, but just filling up the space to make it look, at least at first glance, a bit more representative of how this would look in a real-world application.
html 
<div class="accordion accordion-sm" id="accordionSmallFlushExample">
  <div class="accordion-item">
    <h2 class="accordion-header" id="small-headingOne">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#small-collapseOne" aria-expanded="false" aria-controls="small-collapseOne">
        Accordion Item #1
      </button>
    </h2>
    <div id="small-collapseOne" class="accordion-collapse collapse" aria-labelledby="small-headingOne" data-bs-parent="#accordionsmallExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-small</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="small-headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#small-collapseTwo" aria-expanded="false" aria-controls="small-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="small-collapseTwo" class="accordion-collapse collapse" aria-labelledby="small-headingTwo" data-bs-parent="#accordionsmallExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-sm</code> class. This is the second item's accordion body. Let's imagine this being filled with some actual content.</div>
    </div>
  </div>
  <div class="accordion-item">
    <h2 class="accordion-header" id="small-headingThree">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#small-collapseThree" aria-expanded="false" aria-controls="small-collapseThree">
        Accordion Item #3
      </button>
    </h2>
    <div id="small-collapseThree" class="accordion-collapse collapse" aria-labelledby="small-headingThree" data-bs-parent="#accordionsmallExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-sm</code> class. This is the third item's accordion body. Nothing more exciting happening here in terms of content, but just filling up the space to make it look, at least at first glance, a bit more representative of how this would look in a real-world application.</div>
    </div>
  </div>
</div>

Wide Variant

Add .accordion-wide for wide version. The size is the same as the default accordion, but the collapse / expand icons are different.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-wide class. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-wide class. This is the first item's accordion body.
html 
<div class="accordion accordion-wide">
  <div class="accordion-item">
    <h2 class="accordion-header" id="individual-headingOne">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#wide-collapseOne" aria-expanded="false" aria-controls="wide-collapseOne">
        Accordion Item #1
        <div class="supporting-label">Supporting Label</div>
      </button>
    </h2>
    <div id="wide-collapseOne" class="accordion-collapse collapse" aria-labelledby="wide-headingOne">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-wide</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
</div>

<div class="accordion accordion-wide">
  <div class="accordion-item">
    <h2 class="accordion-header" id="wide-headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#wide-collapseTwo" aria-expanded="false" aria-controls="wide-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="wide-collapseTwo" class="accordion-collapse collapse" aria-labelledby="wide-headingTwo">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-wide</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
</div>

Placeholder content for this accordion, which is intended to demonstrate the .accordion-wide class. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the .accordion-wide class. This is the first item's accordion body.
html 
<div class="accordion accordion-sm accordion-wide">
  <div class="accordion-item">
    <h2 class="accordion-header" id="individual-headingOne">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#wideCompact-collapseOne" aria-expanded="false" aria-controls="wideCompact-collapseOne">
        Accordion Item #1
        <div class="supporting-label">Supporting Label</div>
      </button>
    </h2>
    <div id="wideCompact-collapseOne" class="accordion-collapse collapse" aria-labelledby="wideCompact-headingOne">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-wide</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
</div>

<div class="accordion accordion-sm accordion-wide">
  <div class="accordion-item">
    <h2 class="accordion-header" id="wideCompact-headingTwo">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#wideCompact-collapseTwo" aria-expanded="false" aria-controls="wideCompact-collapseTwo">
        Accordion Item #2
      </button>
    </h2>
    <div id="wideCompact-collapseTwo" class="accordion-collapse collapse" aria-labelledby="wideCompact-headingTwo">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>.accordion-wide</code> class. This is the first item's accordion body.</div>
    </div>
  </div>
</div>

Details / Summary Accordion

Experimental feature: You can create an accordion without requiring JavaScript using the details / summary elements. Note that this doesn’t have expand / collapse animation and doesn’t close with Esc key.

Accordion Title 1

....

Accordion Title 2

....

Accordion Title 3

....

html 
<div class="accordion">
  <details class="accordion-item">
    <summary class="accordion-button">
      <div class="accordion-header">Accordion Title 1</div>
    </summary>
    <div class="accordion-body">
      <p>....</p>
    </div>
  </details>
  <details class="accordion-item">
    <summary class="accordion-button">
      <div class="accordion-header">Accordion Title 2</div>
    </summary>
    <div class="accordion-body">
      <p>....</p>
    </div>
  </details>
  <details class="accordion-item">
    <summary class="accordion-button">
      <div class="accordion-header">Accordion Title 3</div>
    </summary>
    <div class="accordion-body">
      <p>....</p>
    </div>
  </details>
</div>

Accessibility

Please read the collapse accessibility section for more information.

CSS

Variables

As part of Bootstrap’s evolving CSS variables approach, accordions now use local CSS variables on .accordion for enhanced real-time customization. Values for the CSS variables are set via Sass, so Sass customization is still supported, too.

scss/_accordion.scss 
--#{$prefix}accordion-color: #{$accordion-color};
--#{$prefix}accordion-bg: #{$accordion-bg};
--#{$prefix}accordion-transition: #{$accordion-transition};
--#{$prefix}accordion-border-color: #{$accordion-border-color};
--#{$prefix}accordion-border-width: #{$accordion-border-width};
--#{$prefix}accordion-border-radius: #{$accordion-border-radius};
--#{$prefix}accordion-inner-border-radius: #{$accordion-inner-border-radius};
--#{$prefix}accordion-btn-padding-x: #{$accordion-button-padding-x};
--#{$prefix}accordion-btn-padding-y: #{$accordion-button-padding-y};
--#{$prefix}accordion-btn-color: #{$accordion-button-color};
--#{$prefix}accordion-btn-bg: #{$accordion-button-bg};
--#{$prefix}accordion-btn-icon: #{escape-svg($accordion-button-icon)};
--#{$prefix}accordion-btn-icon-width: #{$accordion-icon-width};
--#{$prefix}accordion-btn-icon-transform: #{$accordion-icon-transform};
--#{$prefix}accordion-btn-icon-transition: #{$accordion-icon-transition};
--#{$prefix}accordion-btn-active-icon: #{escape-svg($accordion-button-active-icon)};
--#{$prefix}accordion-btn-focus-box-shadow: #{$accordion-button-focus-box-shadow};
--#{$prefix}accordion-body-padding-x: #{$accordion-body-padding-x};
--#{$prefix}accordion-body-padding-y: #{$accordion-body-padding-y};
--#{$prefix}accordion-active-color: #{$accordion-button-active-color};
--#{$prefix}accordion-active-bg: #{$accordion-button-active-bg};

Sass variables

scss/_variables.scss 
$accordion-padding-y:                     1rem;
$accordion-padding-x:                     1.25rem;
$accordion-color:                         var(--#{$prefix}body-color);
$accordion-bg:                            var(--#{$prefix}body-bg);
$accordion-border-width:                  var(--#{$prefix}border-width);
$accordion-border-color:                  var(--#{$prefix}border-color);
$accordion-border-radius:                 var(--#{$prefix}border-radius);
$accordion-inner-border-radius:           subtract($accordion-border-radius, $accordion-border-width);

$accordion-body-padding-y:                $accordion-padding-y;
$accordion-body-padding-x:                $accordion-padding-x;

$accordion-button-padding-y:              $accordion-padding-y;
$accordion-button-padding-x:              $accordion-padding-x;
$accordion-button-color:                  var(--#{$prefix}body-color);
$accordion-button-bg:                     var(--#{$prefix}accordion-bg);
$accordion-transition:                    $btn-transition, border-radius .15s ease;
$accordion-button-active-bg:              var(--#{$prefix}accordion-bg);  // Modus Customized
$accordion-button-active-color:           var(--#{$prefix}body-color); // Modus Customized

// fusv-disable
$accordion-button-focus-border-color:     $input-focus-border-color; // Deprecated in v5.3.3
// fusv-enable
$accordion-button-focus-box-shadow:       $btn-focus-box-shadow;

$accordion-icon-width:                    1.5rem; // Modus Customized
$accordion-icon-color:                    $body-color;
$accordion-icon-active-color:             $body-color; // Modus Customized
$accordion-icon-transition:               transform .2s ease-in-out;
$accordion-icon-transform:                rotate(-180deg);

$accordion-button-icon:        url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height='24' fill='#6a6e79'><path fill-rule='evenodd' d='M15.88 9.29 12 13.17 8.12 9.29a.996.996 0 1 0-1.41 1.41l4.59 4.59c.39.39 1.02.39 1.41 0l4.59-4.59a.996.996 0 0 0 0-1.41c-.39-.38-1.03-.39-1.42 0Z'/></svg>");
$accordion-button-active-icon: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height='24' fill='#6a6e79'><path fill-rule='evenodd' d='M15.88 9.29 12 13.17 8.12 9.29a.996.996 0 1 0-1.41 1.41l4.59 4.59c.39.39 1.02.39 1.41 0l4.59-4.59a.996.996 0 0 0 0-1.41c-.39-.38-1.03-.39-1.42 0Z'/></svg>");
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Last updated October 18, 2024.
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