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-bs-dismiss="alert".
1Contextual colours
Eight colour variants to match the meaning of the message.
A primary alert: We have been feeding this neighbourhood for over a decade, and we still love it.
A secondary alert: We listen first, then build a plan around what you actually need.
A success alert: Start in minutes and get help from a real person whenever you need it.
A danger alert: Our team has done this many times, so you never have to guess.
A warning alert: Order for pickup or delivery and enjoy the same dishes at home.
A info alert: Clear prices, honest advice and no surprises along the way.
A light alert: We measure success by how many guests come back and tell their friends.
A dark alert: Vegan, vegetarian and gluten-free dishes are marked clearly on every menu.
<div class="alert alert-primary" role="alert">
A primary alert: We have been feeding this neighbourhood for over a decade, and we still love it.
</div>
<div class="alert alert-secondary" role="alert">
A secondary alert: We listen first, then build a plan around what you actually need.
</div>
<div class="alert alert-success" role="alert">
A success alert: Start in minutes and get help from a real person whenever you need it.
</div>
<div class="alert alert-danger" role="alert">
A danger alert: Our team has done this many times, so you never have to guess.
</div>
<div class="alert alert-warning" role="alert">
A warning alert: Order for pickup or delivery and enjoy the same dishes at home.
</div>
<div class="alert alert-info" role="alert">
A info alert: Clear prices, honest advice and no surprises along the way.
</div>
<div class="alert alert-light" role="alert">
A light alert: We measure success by how many guests come back and tell their friends.
</div>
<div class="alert alert-dark" role="alert">
A dark alert: Vegan, vegetarian and gluten-free dishes are marked clearly on every menu.
</div>2Alerts with icons
A leading icon makes the type of message clear at a glance.
Your changes were saved.
A new version is available.
Your storage is almost full.
The payment could not be processed.
<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-bs-dismiss="alert".
Heads up! Cooking classes on Saturday mornings teach you our favourite recipes.
Thousands of guests already trust us, and we work hard to keep it that way.
<div class="alert alert-warning alert-dismissible fade show" role="alert">
<strong>Heads up!</strong> Cooking classes on Saturday mornings teach you our favourite recipes.
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>
<div class="alert alert-primary alert-dismissible fade show mb-0" role="alert">
Thousands of guests already trust us, and we work hard to keep it that way.
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>4Heading and divider
Longer messages with an alert heading, paragraphs and a horizontal rule.
Goal reached!
Bread is baked every morning and pasta is rolled by hand in our kitchen. Private dining rooms seat up to forty guests for birthdays and business dinners.
Next milestone: Nov 20, 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>Bread is baked every morning and pasta is rolled by hand in our kitchen. Private dining rooms seat up to forty guests for birthdays and business dinners.</p>
<hr>
<p class="mb-0 small">Next milestone: Nov 20, 2026</p>
</div>5Alert links
Use .alert-link so links pick up a matching, bolder colour.
Read the release notes to see what changed.
Your card expires soon. Update billing details.
<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.
Meeting invitation
Ruby Alvarez invited you to a call on Feb 7, 2027 at 08:45.
<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">
Ruby Alvarez invited you to a call on Feb 7, 2027 at 08:45.
</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.
Tip: drag rows to change their order.
Last synced 34 min ago.
<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 34 min ago.
</div>8Alert with a list
List the details of a problem inside a single alert.
Import finished with warnings
- 2 rows skipped: missing email address
- 3 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>2 rows skipped: missing email address</li>
<li>3 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.
Note
Our terrace is open from spring to autumn, with heaters for cooler evenings.
Success
We keep things simple, so you can focus on what matters to you.
Important
Children are always welcome, with a menu made just for them.
<div class="alert ca-alert-accent border-primary" role="alert">
<strong class="text-primary">Note</strong>
<div>
Our terrace is open from spring to autumn, with heaters for cooler evenings.
</div>
</div>
<div class="alert ca-alert-accent border-success" role="alert">
<strong class="text-success">Success</strong>
<div>
We keep things simple, so you can focus on what matters to you.
</div>
</div>
<div class="alert ca-alert-accent border-danger mb-0" role="alert">
<strong class="text-danger">Important</strong>
<div>
Children are always welcome, with a menu made just for them.
</div>
</div>10Upload progress
An alert that carries a progress bar while a long task runs.
Uploading looking-back-at-a-busy-season.zip77%
<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>looking-back-at-a-busy-season.zip</strong></span><span class="small text-body-secondary">77%</span>
</div>
<div class="progress" role="progressbar" aria-label="Upload progress" aria-valuenow="77" aria-valuemin="0" aria-valuemax="100" style="height: 8px;">
<div class="progress-bar progress-bar-striped progress-bar-animated" style="width: 77%;">
</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-6.svg" alt="Felix Ashford" class="rounded-circle flex-shrink-0" width="44" height="44">
<div>
<div class="fw-semibold">
Felix Ashford <span class="small text-body-secondary fw-normal">7 hours ago</span>
</div>
<div>
Every detail is handled by people who care about getting it right.
</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.
We use cookies to remember your settings and understand how the site is used.
<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-bs-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-bs-dismiss="alert">Accept all</button>
<button type="button" class="btn btn-outline-light btn-sm text-nowrap" data-bs-dismiss="alert">Essential only</button>
</div>
<button type="button" class="btn-close" data-bs-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.
Scheduled maintenance on Feb 4, 2027 from 02:00 to 04:00 UTC. Details
<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>Feb 4, 2027</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.
System statusUpdated 1 days ago
APIOperational
DatabaseOperational
Email deliveryDegraded
<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 1 days 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.
Generating your report. This usually takes under a minute.
<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.
NewOnline reservations is now available for every plan. Try it
<div class="alert alert-primary alert-dismissible fade show mb-0" role="alert">
<span class="badge text-bg-primary me-2">New</span><strong>Online reservations</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-bs-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.
Verified
Awaiting review
Blocked
Beta
<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.
Your trial ends in 4 days
Upgrade now to keep your projects and team members.
<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 4 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-bs-dismiss="alert" aria-label="Close"></button>
</div>20Stacked notifications
Narrow alerts with a shadow, stacked like a notification centre.
Order #TX-9573 was delivered.
Mia Nguyen joined your workspace.
Backup failed yesterday.
<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 #TX-9573 was delivered.
<button type="button" class="btn-close" data-bs-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> Mia Nguyen joined your workspace.
<button type="button" class="btn-close" data-bs-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 yesterday.
<button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
</div>
</div>