Collapse
Collapse shows and hides content with a short animation. Point a button or link at the target with data-bs-toggle="collapse", keep aria-expanded and aria-controls in sync, and use it for read-more text, filter panels, sub-menus and expandable rows.
1Button toggle
A button with data-bs-toggle="collapse" shows and hides the target.
Start in minutes and get help from a real person whenever you need it. Thousands of members already trust us, and we work hard to keep it that way.
<button class="btn btn-primary" type="button" data-bs-toggle="collapse" data-bs-target="#collapse-908" aria-expanded="false" aria-controls="collapse-908">Toggle details</button>
<div class="collapse" id="collapse-908">
<div class="card card-body mt-2">
Start in minutes and get help from a real person whenever you need it. Thousands of members already trust us, and we work hard to keep it that way.
</div>
</div>2Link toggle
A link with href="#id" and role="button" works the same way.
What does this mean?
Send and receive money in more than 30 currencies at fair exchange rates.
<a class="link-primary" data-bs-toggle="collapse" href="#collapse-909" role="button" aria-expanded="false" aria-controls="collapse-909"><i class="bi bi-info-circle-fill" aria-hidden="true"></i> What does this mean?</a>
<div class="collapse" id="collapse-909">
<p class="small text-body-secondary mt-2 mb-0">Send and receive money in more than 30 currencies at fair exchange rates.</p>
</div>3Horizontal collapse
collapse-horizontal animates the width; the content needs a fixed width.
No monthly fees on the basic plan and no hidden charges on transfers.
<button class="btn btn-outline-primary" type="button" data-bs-toggle="collapse" data-bs-target="#collapse-910" aria-expanded="false" aria-controls="collapse-910">Toggle width</button>
<div style="min-height: 110px;" class="mt-2">
<div class="collapse collapse-horizontal" id="collapse-910">
<div class="card card-body" style="width: 260px;">
No monthly fees on the basic plan and no hidden charges on transfers.
</div>
</div>
</div>4Multiple targets
One button can toggle several elements by targeting a shared class.
Accounting sync keeps your books up to date without manual exports.
Set approval rules for large payments and see who spent what, and why.
<div class="d-flex flex-wrap gap-2 mb-2">
<button class="btn btn-outline-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#multi-911" aria-expanded="false" aria-controls="multi-911">Toggle first</button>
<button class="btn btn-outline-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#multi-912" aria-expanded="false" aria-controls="multi-912">Toggle second</button>
<button class="btn btn-primary" type="button" data-bs-toggle="collapse" data-bs-target=".multi-group-913" aria-expanded="false" aria-controls="multi-911 multi-912">Toggle both</button>
</div>
<div class="row g-2">
<div class="col-sm-6">
<div class="collapse multi-group-913" id="multi-911">
<div class="card card-body">
Accounting sync keeps your books up to date without manual exports.
</div>
</div>
</div>
<div class="col-sm-6">
<div class="collapse multi-group-913" id="multi-912">
<div class="card card-body">
Set approval rules for large payments and see who spent what, and why.
</div>
</div>
</div>
</div>5Read more
Show the first part of a text and reveal the rest on demand.
We listen first, then build a plan around what you actually need. Every payment appears instantly, with receipts matched automatically.
Real people answer your questions around the clock, every day of the year. Every payment appears instantly, with receipts matched automatically. Invoices go out with a payment link, so customers can pay you in one click.
<p class="mb-1">We listen first, then build a plan around what you actually need. Every payment appears instantly, with receipts matched automatically.</p>
<div class="collapse" id="more-914">
<p class="mb-1">Real people answer your questions around the clock, every day of the year. Every payment appears instantly, with receipts matched automatically. Invoices go out with a payment link, so customers can pay you in one click.</p>
</div>
<button class="btn btn-link px-0 ca-more" type="button" data-bs-toggle="collapse" data-bs-target="#more-914" aria-expanded="false" aria-controls="more-914"><span class="ca-more-show">Read more</span><span class="ca-more-hide">Show less</span></button>6Filter panel
A filter button above a table reveals extra search fields.
<div class="d-flex gap-2">
<input type="search" class="form-control" placeholder="Search orders" aria-label="Search orders" style="max-width: 280px;">
<button class="btn btn-outline-secondary" type="button" data-bs-toggle="collapse" data-bs-target="#filters-915" aria-expanded="false" aria-controls="filters-915"><i class="bi bi-sliders" aria-hidden="true"></i> Filters</button>
</div>
<div class="collapse" id="filters-915">
<div class="border rounded p-3 mt-2 row g-2">
<div class="col-sm-6">
<label class="form-label small" for="filter-q-916">Customer</label>
<input class="form-control form-control-sm" id="filter-q-916" type="text" placeholder="Ravi Ibrahim">
</div>
<div class="col-sm-6">
<label class="form-label small" for="filter-status-917">Status</label>
<select class="form-select form-select-sm" id="filter-status-917">
<option>Any</option>
<option>Paid</option>
<option>Pending</option>
<option>Refunded</option>
</select>
</div>
<div class="col-12 text-end">
<button type="button" class="btn btn-primary btn-sm">Apply</button>
</div>
</div>
</div>7Sidebar sub-menus
Nested navigation where each section expands to show its links.
<nav class="border rounded p-2" style="max-width: 260px;" aria-label="Admin menu">
<ul class="nav flex-column">
<li class="nav-item"><a class="nav-link link-body-emphasis" href="#"><i class="bi bi-house-fill" aria-hidden="true"></i> Home</a></li>
<li class="nav-item"><a class="nav-link link-body-emphasis d-flex justify-content-between" data-bs-toggle="collapse" href="#menu-918" role="button" aria-expanded="true" aria-controls="menu-918"><span><i class="bi bi-bag-fill" aria-hidden="true"></i> Sales</span><i class="bi bi-chevron-down" aria-hidden="true"></i></a><div class="collapse show" id="menu-918"><ul class="nav flex-column ms-4 small"><li class="nav-item"><a class="nav-link py-1" href="#">Orders</a></li><li class="nav-item"><a class="nav-link py-1" href="#">Invoices</a></li></ul></div></li>
<li class="nav-item"><a class="nav-link link-body-emphasis d-flex justify-content-between" data-bs-toggle="collapse" href="#menu-919" role="button" aria-expanded="false" aria-controls="menu-919"><span><i class="bi bi-bar-chart-fill" aria-hidden="true"></i> Reports</span><i class="bi bi-chevron-down" aria-hidden="true"></i></a><div class="collapse" id="menu-919"><ul class="nav flex-column ms-4 small"><li class="nav-item"><a class="nav-link py-1" href="#">Weekly</a></li><li class="nav-item"><a class="nav-link py-1" href="#">Monthly</a></li></ul></div></li>
</ul>
</nav>8Expandable table rows
A detail row under each table row opens with a small toggle.
| Invoice | Amount | Details |
|---|---|---|
| #PO-7815 | $641.95 | |
Billed to Zoe Duarte, Copenhagen. Due Nov 29, 2026. | ||
| #INV-6743 | $842.59 | |
Billed to Finn Kowalski, Dublin. Due Nov 3, 2026. | ||
<div class="table-responsive">
<table class="table align-middle mb-0">
<thead>
<tr>
<th scope="col">Invoice</th>
<th scope="col">Amount</th>
<th scope="col"><span class="visually-hidden">Details</span></th>
</tr>
</thead>
<tbody>
<tr>
<td>#PO-7815</td>
<td>$641.95</td>
<td class="text-end"><button class="btn btn-sm btn-light border" type="button" data-bs-toggle="collapse" data-bs-target="#row-detail-920" aria-expanded="false" aria-controls="row-detail-920"><i class="bi bi-chevron-expand" aria-hidden="true"></i><span class="visually-hidden">Show details</span></button></td>
</tr>
<tr>
<td colspan="3" class="p-0 border-0"><div class="collapse" id="row-detail-920"><div class="p-3 bg-body-tertiary small">Billed to Zoe Duarte, Copenhagen. Due Nov 29, 2026.</div></div></td>
</tr>
<tr>
<td>#INV-6743</td>
<td>$842.59</td>
<td class="text-end"><button class="btn btn-sm btn-light border" type="button" data-bs-toggle="collapse" data-bs-target="#row-detail-921" aria-expanded="false" aria-controls="row-detail-921"><i class="bi bi-chevron-expand" aria-hidden="true"></i><span class="visually-hidden">Show details</span></button></td>
</tr>
<tr>
<td colspan="3" class="p-0 border-0"><div class="collapse" id="row-detail-921"><div class="p-3 bg-body-tertiary small">Billed to Finn Kowalski, Dublin. Due Nov 3, 2026.</div></div></td>
</tr>
</tbody>
</table>
</div>9Advanced form options
Hide rarely used settings behind an "Advanced" toggle.
<div style="max-width: 420px;">
<a class="small" data-bs-toggle="collapse" href="#advanced-922" role="button" aria-expanded="false" aria-controls="advanced-922"><i class="bi bi-gear-fill" aria-hidden="true"></i> Advanced options</a>
<div class="collapse" id="advanced-922">
<div class="mt-2">
<label class="form-label small" for="adv-slug-923">URL slug</label>
<input class="form-control form-control-sm mb-2" id="adv-slug-923" type="text" value="the-small-habits-that-make-a-big-difference">
<div class="form-check">
<input class="form-check-input" type="checkbox" id="adv-index-924">
<label class="form-check-label small" for="adv-index-924">Hide from search engines</label>
</div>
</div>
</div>
</div>10Minimisable card
A header button collapses the card body, as in dashboard widgets.
Traffic
52.2k
16% this week
<div class="card" style="max-width: 26rem;">
<div class="card-header d-flex justify-content-between align-items-center">
<span class="fw-semibold"><i class="bi bi-graph-up" aria-hidden="true"></i> Traffic</span>
<button class="btn btn-sm btn-link link-secondary p-0" type="button" data-bs-toggle="collapse" data-bs-target="#widget-925" aria-expanded="true" aria-controls="widget-925"><i class="bi bi-dash-square-fill" aria-hidden="true"></i><span class="visually-hidden">Minimise</span></button>
</div>
<div class="collapse show" id="widget-925">
<div class="card-body">
<div class="fs-3 fw-bold">
52.2k
</div>
<div class="small text-success">
<i class="bi bi-arrow-up" aria-hidden="true"></i> 16% this week
</div>
</div>
</div>
</div>11Open by default
Add .show to start expanded; the button's aria-expanded is then true.
Set approval rules for large payments and see who spent what, and why. Your money is protected by bank-grade security and regulated partners.
<button class="btn btn-outline-dark btn-sm" type="button" data-bs-toggle="collapse" data-bs-target="#collapse-926" aria-expanded="true" aria-controls="collapse-926">Hide summary</button>
<div class="collapse show" id="collapse-926">
<div class="alert alert-secondary mt-2 mb-0">
Set approval rules for large payments and see who spent what, and why. Your money is protected by bank-grade security and regulated partners.
</div>
</div>12Rotating chevron
A chevron that turns when the panel opens, driven by aria-expanded in CSS.
Friendly people answer your questions quickly, by phone, chat or email.
<button class="btn btn-light border w-100 d-flex justify-content-between align-items-center ca-chev" type="button" data-bs-toggle="collapse" data-bs-target="#collapse-927" aria-expanded="false" aria-controls="collapse-927" style="max-width: 420px;">Shipping & returns<i class="bi bi-chevron-down" aria-hidden="true"></i></button>
<div class="collapse" id="collapse-927" style="max-width: 420px;">
<div class="p-3 small">
Friendly people answer your questions quickly, by phone, chat or email.
</div>
</div>13Comments thread
Keep a feed short and let readers open the replies.
Thousands of members already trust us, and we work hard to keep it that way.
View 2 replies
Amara Okafor Accounting sync keeps your books up to date without manual exports.
Omar Larsen No monthly fees on the basic plan and no hidden charges on transfers.
<p class="mb-1">Thousands of members already trust us, and we work hard to keep it that way.</p>
<a class="small" data-bs-toggle="collapse" href="#comments-928" role="button" aria-expanded="false" aria-controls="comments-928"><i class="bi bi-chat-fill" aria-hidden="true"></i> View 2 replies</a>
<div class="collapse" id="comments-928">
<div class="mt-2 ps-3 border-start">
<div class="d-flex gap-2 mb-2">
<img src="../assets/img/avatar-12.svg" alt="Amara Okafor" class="rounded-circle flex-shrink-0" width="32" height="32">
<div class="bg-body-tertiary rounded p-2 small">
<strong>Amara Okafor</strong> Accounting sync keeps your books up to date without manual exports.
</div>
</div>
<div class="d-flex gap-2 mb-2">
<img src="../assets/img/avatar-7.svg" alt="Omar Larsen" class="rounded-circle flex-shrink-0" width="32" height="32">
<div class="bg-body-tertiary rounded p-2 small">
<strong>Omar Larsen</strong> No monthly fees on the basic plan and no hidden charges on transfers.
</div>
</div>
</div>
</div>14Release notes
A compact version line that expands into the full change list.
Version 4.3 Stable
Sep 24, 2026
- Bank-grade encryption
- Spending limits
- Faster loading on slow connections
<div class="border rounded p-3">
<div class="d-flex justify-content-between align-items-center">
<div>
<span class="fw-semibold">Version 4.3</span> <span class="badge text-bg-success">Stable</span>
<div class="small text-body-secondary">
Sep 24, 2026
</div>
</div>
<button class="btn btn-outline-primary btn-sm" type="button" data-bs-toggle="collapse" data-bs-target="#notes-929" aria-expanded="false" aria-controls="notes-929">What's new</button>
</div>
<div class="collapse" id="notes-929">
<ul class="small mt-3 mb-0">
<li>Bank-grade encryption</li>
<li>Spending limits</li>
<li>Faster loading on slow connections</li>
</ul>
</div>
</div>15Specification list
A definition list of technical details hidden behind a full-width toggle.
- Weight
- 6.4 kg
- Dimensions
- 27 x 35 x 7 cm
- Warranty
- 3 years
<button class="btn btn-outline-secondary w-100" type="button" data-bs-toggle="collapse" data-bs-target="#specs-930" aria-expanded="false" aria-controls="specs-930"><i class="bi bi-list-columns-reverse" aria-hidden="true"></i> Full specifications</button>
<div class="collapse" id="specs-930">
<dl class="row small border rounded p-3 mt-2 mb-0">
<dt class="col-sm-4">Weight</dt>
<dd class="col-sm-8">6.4 kg</dd>
<dt class="col-sm-4">Dimensions</dt>
<dd class="col-sm-8">27 x 35 x 7 cm</dd>
<dt class="col-sm-4">Warranty</dt>
<dd class="col-sm-8 mb-0">3 years</dd>
</dl>
</div>16Expandable search bar
A search icon in a header opens a full-width search field below it.
Emberan
<div class="border rounded">
<div class="d-flex align-items-center justify-content-between p-2">
<span class="fw-bold">Emberan</span>
<button class="btn btn-light" type="button" data-bs-toggle="collapse" data-bs-target="#msearch-931" aria-expanded="false" aria-controls="msearch-931"><i class="bi bi-search" aria-hidden="true"></i><span class="visually-hidden">Search</span></button>
</div>
<div class="collapse" id="msearch-931">
<div class="p-2 border-top">
<label class="visually-hidden" for="msearch-input-932">Search</label>
<input type="search" class="form-control" id="msearch-input-932" placeholder="Search Emberan">
</div>
</div>
</div>17Onboarding checklist
Each checklist step expands to explain what to do.
We listen first, then build a plan around what you actually need.
Issue virtual and physical cards to your team with limits you control.
Payroll runs on time, with tax and pension payments handled for you.
<div class="list-group" style="max-width: 480px;">
<div class="list-group-item">
<button class="btn btn-link p-0 text-decoration-none link-body-emphasis d-flex align-items-center gap-2 w-100 text-start" type="button" data-bs-toggle="collapse" data-bs-target="#step-933" aria-expanded="false" aria-controls="step-933"><span class="text-success"><i class="bi bi-check-circle-fill" aria-hidden="true"></i></span>Verify your email</button>
<div class="collapse" id="step-933">
<p class="small text-body-secondary mt-2 mb-1 ms-4">We listen first, then build a plan around what you actually need.</p>
</div>
</div>
<div class="list-group-item">
<button class="btn btn-link p-0 text-decoration-none link-body-emphasis d-flex align-items-center gap-2 w-100 text-start" type="button" data-bs-toggle="collapse" data-bs-target="#step-934" aria-expanded="false" aria-controls="step-934"><span class="text-body-tertiary"><i class="bi bi-circle-fill" aria-hidden="true"></i></span>Add a payment method</button>
<div class="collapse" id="step-934">
<p class="small text-body-secondary mt-2 mb-1 ms-4">Issue virtual and physical cards to your team with limits you control.</p>
</div>
</div>
<div class="list-group-item">
<button class="btn btn-link p-0 text-decoration-none link-body-emphasis d-flex align-items-center gap-2 w-100 text-start" type="button" data-bs-toggle="collapse" data-bs-target="#step-935" aria-expanded="false" aria-controls="step-935"><span class="text-body-tertiary"><i class="bi bi-circle-fill" aria-hidden="true"></i></span>Invite a teammate</button>
<div class="collapse" id="step-935">
<p class="small text-body-secondary mt-2 mb-1 ms-4">Payroll runs on time, with tax and pension payments handled for you.</p>
</div>
</div>
</div>18Swap two panels
Two collapses sharing a class swap places: one hides while the other shows.
Read-only view: Open a business account online in about ten minutes, with no branch visit.
<div class="pane-group-938">
<div class="collapse show pane-group-938-p" id="pane-936">
<div class="card card-body">
<p><i class="bi bi-eye" aria-hidden="true"></i> Read-only view: Open a business account online in about ten minutes, with no branch visit.</p>
<button class="btn btn-primary btn-sm align-self-start" type="button" data-bs-toggle="collapse" data-bs-target=".pane-group-938-p" aria-expanded="true" aria-controls="pane-936 pane-937"><i class="bi bi-pencil-fill" aria-hidden="true"></i> Edit</button>
</div>
</div>
<div class="collapse pane-group-938-p" id="pane-937">
<div class="card card-body">
<label class="form-label" for="pane-937-text">Description</label>
<textarea class="form-control mb-2" id="pane-937-text" rows="2">Our team has done this many times, so you never have to guess.</textarea>
<button class="btn btn-success btn-sm align-self-start" type="button" data-bs-toggle="collapse" data-bs-target=".pane-group-938-p" aria-expanded="false" aria-controls="pane-936 pane-937"><i class="bi bi-check-lg" aria-hidden="true"></i> Done</button>
</div>
</div>
</div>19Grouped notifications
Older notifications collapse into a single "show earlier" row.
- Every detail is handled by people who care about getting it right.
- Cash flow forecasts show where you will be next month, not just today.
- We keep things simple, so you can focus on what matters to you.
<ul class="list-group" style="max-width: 420px;">
<li class="list-group-item small"><i class="bi bi-bell-fill" aria-hidden="true"></i> Every detail is handled by people who care about getting it right.</li>
<li class="list-group-item p-0"><div class="collapse" id="group-939"><ul class="list-group list-group-flush"><li class="list-group-item small text-body-secondary">Cash flow forecasts show where you will be next month, not just today.</li><li class="list-group-item small text-body-secondary">We keep things simple, so you can focus on what matters to you.</li></ul></div><button class="btn btn-link btn-sm w-100" type="button" data-bs-toggle="collapse" data-bs-target="#group-939" aria-expanded="false" aria-controls="group-939">Show 3 earlier</button></li>
</ul>20Nested collapse
A collapse inside another for drilling into details step by step.
Start in minutes and get help from a real person whenever you need it.
- Design: $1,253.93
- Development: $5,314.50
- Marketing: $5,610.02
<button class="btn btn-outline-primary" type="button" data-bs-toggle="collapse" data-bs-target="#outer-940" aria-expanded="false" aria-controls="outer-940">Project details</button>
<div class="collapse" id="outer-940">
<div class="card card-body mt-2">
<p>Start in minutes and get help from a real person whenever you need it.</p>
<button class="btn btn-sm btn-outline-secondary align-self-start" type="button" data-bs-toggle="collapse" data-bs-target="#inner-941" aria-expanded="false" aria-controls="inner-941">Budget breakdown</button>
<div class="collapse" id="inner-941">
<ul class="small mt-2 mb-0">
<li>Design: $1,253.93</li>
<li>Development: $5,314.50</li>
<li>Marketing: $5,610.02</li>
</ul>
</div>
</div>
</div>