Alerts give short, contextual feedback: confirmations, warnings, errors and announcements. Pick a colour that matches the meaning, add icons, links or actions, and make them dismissible with a close button and data-ui-dismiss="alert".
1Contextual colours
Eight colour variants to match the meaning of the message.
<div class="alert alert-primary" role="alert">
A primary alert: Clear prices, honest advice and no surprises along the way.
</div>
<div class="alert alert-secondary" role="alert">
A secondary alert: Sellers get professional photos, floor plans and a marketing plan included.
</div>
<div class="alert alert-success" role="alert">
A success alert: Every detail is handled by people who care about getting it right.
</div>
<div class="alert alert-danger" role="alert">
A danger alert: Mortgage advisors help you understand what you can afford before you start.
</div>
<div class="alert alert-warning" role="alert">
A warning alert: Every listing is checked by our team, so the photos match what you see in person.
</div>
<div class="alert alert-info" role="alert">
A info alert: Our local agents know every street, school and coffee shop in the area.
</div>
<div class="alert alert-light" role="alert">
A light alert: We measure success by how many buyers come back and tell their friends.
</div>
<div class="alert alert-dark" role="alert">
A dark alert: Friendly people answer your questions quickly, by phone, chat or email.
</div>2Alerts with icons
A leading icon makes the type of message clear at a glance.
<div class="alert alert-success d-flex align-items-center gap-2" role="alert">
<i class="bi bi-check-circle-fill" aria-hidden="true"></i>
<div>
Your changes were saved.
</div>
</div>
<div class="alert alert-info d-flex align-items-center gap-2" role="alert">
<i class="bi bi-info-circle-fill" aria-hidden="true"></i>
<div>
A new version is available.
</div>
</div>
<div class="alert alert-warning d-flex align-items-center gap-2" role="alert">
<i class="bi bi-exclamation-triangle-fill" aria-hidden="true"></i>
<div>
Your storage is almost full.
</div>
</div>
<div class="alert alert-danger d-flex align-items-center gap-2 mb-0" role="alert">
<i class="bi bi-x-octagon-fill" aria-hidden="true"></i>
<div>
The payment could not be processed.
</div>
</div>3Dismissible alerts
Add .alert-dismissible, .fade .show and a close button with data-ui-dismiss="alert".
<div class="alert alert-warning alert-dismissible fade show" role="alert">
<strong>Heads up!</strong> We handle the paperwork, so you can focus on planning the move.
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>
<div class="alert alert-primary alert-dismissible fade show mb-0" role="alert">
Start in minutes and get help from a real person whenever you need it.
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>4Heading and divider
Longer messages with an alert heading, paragraphs and a horizontal rule.
Goal reached!
Honest advice comes first, even when it means waiting for the right home. Most of our homes sell within six weeks, often above the asking price.
Next milestone: Dec 14, 2026
<div class="alert alert-success mb-0" role="alert">
<h4 class="alert-heading"><i class="bi bi-trophy" aria-hidden="true"></i> Goal reached!</h4>
<p>Honest advice comes first, even when it means waiting for the right home. Most of our homes sell within six weeks, often above the asking price.</p>
<hr>
<p class="mb-0 small">Next milestone: Dec 14, 2026</p>
</div>5Alert links
Use .alert-link so links pick up a matching, bolder colour.
<div class="alert alert-info" role="alert">
Read the <a href="#" class="alert-link">release notes</a> to see what changed.
</div>
<div class="alert alert-danger mb-0" role="alert">
Your card expires soon. <a href="#" class="alert-link">Update billing details</a>.
</div>6Alert with actions
Buttons inside the alert let people act on the message directly.
<div class="alert alert-primary d-flex flex-column flex-sm-row align-items-sm-center gap-3 mb-0" role="alert">
<div class="fs-3">
<i class="bi bi-calendar-check" aria-hidden="true"></i>
</div>
<div class="flex-grow-1">
<strong>Meeting invitation</strong>
<div class="small">
Zoe Delgado invited you to a call on Dec 26, 2026 at 20:00.
</div>
</div>
<div class="d-flex gap-2">
<button type="button" class="btn btn-primary btn-sm">Accept</button>
<button type="button" class="btn btn-outline-primary btn-sm">Decline</button>
</div>
</div>7Compact alerts
Less padding and small text for inline hints next to forms.
<div class="alert alert-secondary py-2 px-3 small mb-2" role="alert">
<i class="bi bi-lightbulb" aria-hidden="true"></i> Tip: drag rows to change their order.
</div>
<div class="alert alert-warning py-2 px-3 small mb-0" role="alert">
<i class="bi bi-clock-history" aria-hidden="true"></i> Last synced 22 hours ago.
</div>8Alert with a list
List the details of a problem inside a single alert.
Import finished with warnings
- 5 rows skipped: missing email address
- 5 duplicate records merged
- Dates in column D were read as text
<div class="alert alert-warning mb-0" role="alert">
<h5 class="alert-heading"><i class="bi bi-exclamation-triangle" aria-hidden="true"></i> Import finished with warnings</h5>
<ul class="mb-0">
<li>5 rows skipped: missing email address</li>
<li>5 duplicate records merged</li>
<li>Dates in column D were read as text</li>
</ul>
</div>9Accent border alerts
A light surface with a thick coloured left border, a calm style for docs and dashboards.
<div class="alert ca-alert-accent border-primary" role="alert">
<strong class="text-primary">Note</strong>
<div>
Neighbourhood guides cover transport, schools and things to do.
</div>
</div>
<div class="alert ca-alert-accent border-success" role="alert">
<strong class="text-success">Success</strong>
<div>
Price alerts tell you the moment a home that fits your search comes on the market.
</div>
</div>
<div class="alert ca-alert-accent border-danger mb-0" role="alert">
<strong class="text-danger">Important</strong>
<div>
Our team has done this many times, so you never have to guess.
</div>
</div>10Upload progress
An alert that carries a progress bar while a long task runs.
<div class="alert alert-light border mb-0" role="status">
<div class="d-flex justify-content-between mb-2">
<span><i class="bi bi-cloud-arrow-up" aria-hidden="true"></i> Uploading <strong>how-our-valuations-work.zip</strong></span><span class="small text-body-secondary">39%</span>
</div>
<div class="progress" role="progressbar" aria-label="Upload progress" aria-valuenow="39" aria-valuemin="0" aria-valuemax="100" style="height: 8px;">
<div class="progress-bar progress-bar-striped progress-bar-animated" style="width: 39%;">
</div>
</div>
</div>11Message with avatar
A personal message alert with the sender's photo and a reply link.
<div class="alert alert-light border d-flex gap-3 mb-0" role="alert">
<img src="../assets/img/avatar-4.svg" alt="Nora Fischer" class="rounded-circle flex-shrink-0" width="44" height="44">
<div>
<div class="fw-semibold">
Nora Fischer <span class="small text-body-secondary fw-normal">21 hours ago</span>
</div>
<div>
Book viewings online and take a 3D tour before you leave the house.
</div>
<a href="#" class="alert-link small">Reply</a>
</div>
</div>12Cookie banner
A dark dismissible banner with two choices; both buttons close it through the data API.
<div class="alert text-bg-dark border-0 alert-dismissible fade show d-flex flex-column flex-md-row align-items-md-center gap-3 mb-0" role="alert" data-ui-theme="dark">
<div class="fs-4">
<i class="bi bi-cookie" aria-hidden="true"></i>
</div>
<div class="flex-grow-1 small">
We use cookies to remember your settings and understand how the site is used.
</div>
<div class="d-flex gap-2 me-md-4">
<button type="button" class="btn btn-light btn-sm text-nowrap" data-ui-dismiss="alert">Accept all</button>
<button type="button" class="btn btn-outline-light btn-sm text-nowrap" data-ui-dismiss="alert">Essential only</button>
</div>
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>13Form error summary
Collect validation errors at the top of a form, each linking to its field.
<div class="alert alert-danger mb-0" role="alert" aria-live="assertive">
<div class="fw-semibold mb-1">
<i class="bi bi-x-circle" aria-hidden="true"></i> Please fix 3 problems
</div>
<ul class="mb-0 small">
<li><a href="#" class="alert-link">Email</a> must be a valid address</li>
<li><a href="#" class="alert-link">Password</a> needs at least 8 characters</li>
<li><a href="#" class="alert-link">Terms</a> must be accepted</li>
</ul>
</div>14Maintenance notice
A full-width, square-cornered banner for site-wide announcements.
<div class="alert alert-warning rounded-0 border-0 border-bottom border-warning-subtle text-center mb-0 py-2" role="alert">
<i class="bi bi-tools" aria-hidden="true"></i> Scheduled maintenance on <strong>Dec 2, 2026</strong> from 02:00 to 04:00 UTC. <a href="#" class="alert-link">Details</a>
</div>15System status card
Several small alerts inside a card report the state of each service.
<div class="card" style="max-width: 480px;">
<div class="card-header d-flex justify-content-between">
<span class="fw-semibold">System status</span><span class="small text-body-secondary">Updated 31 min ago</span>
</div>
<div class="card-body">
<div class="alert alert-success py-2 d-flex justify-content-between mb-2" role="alert">
<span><i class="bi bi-server" aria-hidden="true"></i> API</span><span>Operational</span>
</div>
<div class="alert alert-success py-2 d-flex justify-content-between mb-2" role="alert">
<span><i class="bi bi-database" aria-hidden="true"></i> Database</span><span>Operational</span>
</div>
<div class="alert alert-warning py-2 d-flex justify-content-between mb-0" role="alert">
<span><i class="bi bi-envelope" aria-hidden="true"></i> Email delivery</span><span>Degraded</span>
</div>
</div>
</div>16Processing alert
A spinner shows that something is happening in the background.
<div class="alert alert-info d-flex align-items-center gap-3 mb-0" role="status">
<div class="spinner-border spinner-border-sm" aria-hidden="true">
</div>
<div>
Generating your report. This usually takes under a minute.
</div>
</div>17Feature announcement
Badges and an icon turn an alert into a friendly product update.
<div class="alert alert-primary alert-dismissible fade show mb-0" role="alert">
<span class="badge text-bg-primary me-2">New</span><strong>Fast paperwork</strong> is now available for every plan. <a href="#" class="alert-link">Try it <i class="bi bi-arrow-right" aria-hidden="true"></i></a>
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>18Soft subtle alerts
Subtle background and emphasis text colours give a softer look; pill corners for short notes.
<div class="d-flex flex-wrap gap-2">
<div class="alert bg-success-subtle text-success-emphasis border border-success-subtle rounded-pill py-1 px-3 mb-0" role="alert">
<i class="bi bi-check2" aria-hidden="true"></i> Verified
</div>
<div class="alert bg-warning-subtle text-warning-emphasis border border-warning-subtle rounded-pill py-1 px-3 mb-0" role="alert">
<i class="bi bi-hourglass-split" aria-hidden="true"></i> Awaiting review
</div>
<div class="alert bg-danger-subtle text-danger-emphasis border border-danger-subtle rounded-pill py-1 px-3 mb-0" role="alert">
<i class="bi bi-slash-circle" aria-hidden="true"></i> Blocked
</div>
<div class="alert bg-info-subtle text-info-emphasis border border-info-subtle rounded-pill py-1 px-3 mb-0" role="alert">
<i class="bi bi-info-circle" aria-hidden="true"></i> Beta
</div>
</div>19Trial ending
An upgrade prompt with a clear call to action and a way to dismiss it.
<div class="alert alert-light border border-primary-subtle alert-dismissible fade show mb-0" role="alert">
<div class="d-flex flex-column flex-sm-row gap-3 align-items-sm-center pe-4">
<div class="flex-grow-1">
<div class="fw-semibold">
<i class="bi bi-hourglass-bottom" aria-hidden="true"></i> Your trial ends in 2 days
</div>
<div class="small text-body-secondary">
Upgrade now to keep your projects and team members.
</div>
</div>
<a href="#" class="btn btn-primary btn-sm text-nowrap">Upgrade plan</a>
</div>
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>20Stacked notifications
Narrow alerts with a shadow, stacked like a notification centre.
<div class="d-grid gap-2" style="max-width: 360px;">
<div class="alert alert-light shadow-sm border-0 alert-dismissible fade show mb-0 small" role="alert">
<span class="text-success"><i class="bi bi-bag-check" aria-hidden="true"></i></span> Order #PO-8016 was delivered.
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>
<div class="alert alert-light shadow-sm border-0 alert-dismissible fade show mb-0 small" role="alert">
<span class="text-primary"><i class="bi bi-person-plus" aria-hidden="true"></i></span> Finn Haddad joined your workspace.
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>
<div class="alert alert-light shadow-sm border-0 alert-dismissible fade show mb-0 small" role="alert">
<span class="text-danger"><i class="bi bi-exclamation-circle" aria-hidden="true"></i></span> Backup failed 4 days ago.
<button type="button" class="btn-close" data-ui-dismiss="alert" aria-label="Close"></button>
</div>
</div>