Accordion

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

On this page

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
      </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>

Custom icon

To set custom icons for the Accordion, use an element with the class .accordion-button-icon inside the button. You can add two icons inside: the first one visible when the Accordion is collapsed, and the second one when expanded. If you add only one icon, it will be used for both states with the transformation transform: var(--bs-accordion-btn-icon-transform) applied to it.

Placeholder content for this accordion, which is intended to demonstrate the custom icon. This is the first item's accordion body.

Placeholder content for this accordion, which is intended to demonstrate the custom icon. 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 custom icon. This is the third 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 custom icon. This is the fourth item's accordion body. Let's imagine this being filled with some actual content.

html

<div class="accordion accordion-flush" id="accordionCustomIconExample">
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#customIcon-collapseOne" aria-expanded="false" aria-controls="customIcon-collapseOne">
        Accordion Item #1
        <div class="accordion-button-icon">
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#plus-square"/>
</svg>

</span>
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#dash-square"/>
</svg>

</span>
        </div>
      </button>
    </h2>
    <div id="customIcon-collapseOne" class="accordion-collapse collapse" data-bs-parent="#accordionCustomIconExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>custom icon</code>. 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="#customIcon-collapseTwo" aria-expanded="false" aria-controls="customIcon-collapseTwo">
        Accordion Item #2
        <div class="accordion-button-icon">
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#chevron-down"/>
</svg>

</span>
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#chevron-up"/>
</svg>

</span>
        </div>
      </button>
    </h2>
    <div id="customIcon-collapseTwo" class="accordion-collapse collapse" data-bs-parent="#accordionCustomIconExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>custom icon</code>. 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="#customIcon-collapseThree" aria-expanded="false" aria-controls="customIcon-collapseThree">
        Accordion Item #3
        <div class="accordion-button-icon">
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#arrow-down"/>
</svg>

</span>
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#arrow-up"/>
</svg>

</span>
        </div>
      </button>
    </h2>
    <div id="customIcon-collapseThree" class="accordion-collapse collapse" data-bs-parent="#accordionCustomIconExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>custom icon</code>. This is the third 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="#customIcon-collapseFour" aria-expanded="false" aria-controls="customIcon-collapseFour">
        Accordion Item #4
        <div class="accordion-button-icon">
          <span><svg class="of-icon" width="32" height="32" fill="currentColor">
	<use href="/assets/icons/bootstrap-icons.svg#arrow-down-circle"/>
</svg>

</span>
        </div>
      </button>
    </h2>
    <div id="customIcon-collapseFour" class="accordion-collapse collapse" data-bs-parent="#accordionCustomIconExample">
      <div class="accordion-body">Placeholder content for this accordion, which is intended to demonstrate the <code>custom icon</code>. This is the fourth item's accordion body. Let's imagine this being filled with some actual content.</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.

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>

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.

node_modules/bootstrap/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

node_modules/bootstrap/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}primary-bg-subtle);
$accordion-button-active-color:           var(--#{$prefix}primary-text-emphasis);

// 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:                    1.25rem;
$accordion-icon-color:                    $body-color;
$accordion-icon-active-color:             $primary-text-emphasis;
$accordion-icon-transition:               transform .2s ease-in-out;
$accordion-icon-transform:                rotate(-180deg);

$accordion-button-icon:         url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='#{$accordion-icon-color}' stroke-linecap='round' stroke-linejoin='round'><path d='M2 5L8 11L14 5'/></svg>");
$accordion-button-active-icon:  url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='#{$accordion-icon-active-color}' stroke-linecap='round' stroke-linejoin='round'><path d='M2 5L8 11L14 5'/></svg>");