Collapse

Available classes

.collapse { /* */ }
.collapsing { /* */ }
.show { /* */ }

How it works

The collapse JavaScript plugin is used to show and hide content. Buttons or anchors are used as triggers that are mapped to specific elements you toggle. Collapsing an element will animate the height from its current value to 0. Given how CSS handles animations, you cannot use padding on a .collapse element. Instead, use the class as an independent wrapping element.

Example

Click the buttons below to show and hide another element via class changes:

• .collapse hides content
• .collapsing is applied during transitions
• .collapse.show shows content

Generally, we recommend using a button with the data-bs-target attribute. While not recommended from a semantic point of view, you can also use a link with the href attribute (and a role="button"). In both cases, the data-bs-toggle="collapse" is required. Note how data-bs-target matches with the div that we are collapsing.

<div>
  <a class="btn btn-primary" data-bs-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">
    Link with href
  </a>
  <button class="btn btn-primary" type="button" data-bs-toggle="collapse" data-bs-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
    Button with data-bs-target
  </button>
</div>
<div class="collapse" id="collapseExample">
  ...
</div>

Multiple targets

A <button> or <a> can show and hide multiple elements by referencing them with a selector in its href or data-bs-target attribute. Multiple <button> or <a> can show and hide an element if they each reference it with their href or data-bs-target attribute. Note how first and second buttons refer to ids while the multiple toggler refers to a class that is present in all the elements that we want to collapse simultaneously, in this case .multi-collapse but may vary.

<div>
  <a href="#multiCollapseExample1" aria-controls="multiCollapseExample1" class="btn btn-primary" data-bs-toggle="collapse" role="button" aria-expanded="false">
    Toggle first element
  </a>
  <button data-bs-target="#multiCollapseExample2" aria-controls="multiCollapseExample2" class="btn btn-primary" type="button" data-bs-toggle="collapse" aria-expanded="false">
    Toggle second element
  </button>
  <button data-bs-target=".multi-collapse" aria-controls="multiCollapseExample1 multiCollapseExample2" class="btn btn-primary" type="button" data-bs-toggle="collapse" aria-expanded="false">
    Toggle both elements
  </button>
</div>

<div class="grid grid-cols-2">
  <div class="collapse multi-collapse" id="multiCollapseExample1">
    ...
  </div>
  <div class="collapse multi-collapse" id="multiCollapseExample2">
    ...
  </div>
</div>