Overflow

Overflow utilities control what happens when content is bigger than its box: overflow-auto scrolls when needed, overflow-hidden clips, overflow-visible lets content spill and overflow-scroll always shows scrollbars. overflow-x-* and overflow-y-* handle each axis separately, ideal for wide tables and side-scrolling rows.

1The four overflow values

overflow-auto, overflow-hidden, overflow-visible and overflow-scroll on boxes of fixed height.

overflow-auto

Our team has done this many times, so you never have to guess. We listen first, then build a plan around what you actually need. Children are welcome, and our paediatric team knows how to make them smile. Same-day appointments are available for urgent needs on weekdays.

overflow-hidden

overflow-visible

overflow-scroll

<div class="row g-3 small">
  <div class="col-6 col-md-3">
    <code>overflow-auto</code>
    <div class="overflow-auto border rounded-3 p-2 bg-body-tertiary" style="height:100px">
      Our team has done this many times, so you never have to guess. We listen first, then build a plan around what you actually need. Children are welcome, and our paediatric team knows how to make them smile. Same-day appointments are available for urgent needs on weekdays.
    </div>
  </div>
  <div class="col-6 col-md-3">
    <code>overflow-hidden</code>
    <div class="overflow-hidden border rounded-3 p-2 bg-body-tertiary" style="height:100px">
      Our team has done this many times, so you never have to guess. We listen first, then build a plan around what you actually need. Children are welcome, and our paediatric team knows how to make them smile. Same-day appointments are available for urgent needs on weekdays.
    </div>
  </div>
  <div class="col-6 col-md-3">
    <code>overflow-visible</code>
    <div class="overflow-visible border rounded-3 p-2 bg-body-tertiary mb-5" style="height:100px">
      Our team has done this many times, so you never have to guess. We listen first, then build a plan around what you actually need. Children are welcome, and our paediatric team knows how to make them smile. Same-day appointments are available for urgent needs on weekdays.
    </div>
  </div>
  <div class="col-6 col-md-3">
    <code>overflow-scroll</code>
    <div class="overflow-scroll border rounded-3 p-2 bg-body-tertiary" style="height:100px">
      Our team has done this many times, so you never have to guess. We listen first, then build a plan around what you actually need. Children are welcome, and our paediatric team knows how to make them smile. Same-day appointments are available for urgent needs on weekdays.
    </div>
  </div>
</div>

2Horizontal scroll only

overflow-x-auto with flex-nowrap scrolls a row of cards sideways.

Health check-ups

Telehealth

General practice

Health check-ups

<div class="d-flex flex-nowrap gap-2 overflow-x-auto pb-2">
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Health check-ups
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Telehealth
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Telehealth
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      General practice
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Health check-ups
    </div>
  </div>
</div>

3Vertical scroll only

overflow-y-auto and a max-height make a scrolling list.

Kenji Patel
Amara Ortega
Chloe Duarte
Ethan Ibrahim
Luna Haddad
Hana Nguyen

<ul class="list-unstyled border rounded-3 overflow-y-auto mb-0" style="max-height:150px">
  <li class="px-3 py-2 border-bottom">Kenji Patel</li>
  <li class="px-3 py-2 border-bottom">Amara Ortega</li>
  <li class="px-3 py-2 border-bottom">Chloe Duarte</li>
  <li class="px-3 py-2 border-bottom">Ethan Ibrahim</li>
  <li class="px-3 py-2 border-bottom">Luna Haddad</li>
  <li class="px-3 py-2">Hana Nguyen</li>
</ul>

4Hidden to clip rounded corners

overflow-hidden on a rounded card clips the image corners.

without

overflow-hidden

<div class="row g-3">
  <div class="col-6">
    <div class="border rounded-4">
      <img src="https://images.unsplash.com/photo-1631217868264-e5b90bb7e133?auto=format&fit=crop&w=1200&h=800&q=70" alt="Not clipped" class="w-100 d-block">
      <div class="p-2 small">
        without
      </div>
    </div>
  </div>
  <div class="col-6">
    <div class="border rounded-4 overflow-hidden">
      <img src="https://images.unsplash.com/photo-1758691461990-03b49d969495?auto=format&fit=crop&w=1200&h=800&q=70" alt="Clipped" class="w-100 d-block">
      <div class="p-2 small">
        overflow-hidden
      </div>
    </div>
  </div>
</div>

5Wide table

A wide table inside overflow-x-auto scrolls instead of breaking the page.

Order	Customer	City	Date	Status	Total
#PO-1800	Sofia Okafor	Barcelona	Apr 27, 2026	In review	$630.20
#PO-8570	Kai Tanaka	Porto	Nov 5, 2025	In review	$801.38

<div class="overflow-x-auto border rounded-3">
  <table class="table table-sm mb-0 text-nowrap">
    <thead>
      <tr>
        <th scope="col">Order</th>
        <th scope="col">Customer</th>
        <th scope="col">City</th>
        <th scope="col">Date</th>
        <th scope="col">Status</th>
        <th scope="col">Total</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>#PO-1800</td>
        <td>Sofia Okafor</td>
        <td>Barcelona</td>
        <td>Apr 27, 2026</td>
        <td>In review</td>
        <td>$630.20</td>
      </tr>
      <tr>
        <td>#PO-8570</td>
        <td>Kai Tanaka</td>
        <td>Porto</td>
        <td>Nov 5, 2025</td>
        <td>In review</td>
        <td>$801.38</td>
      </tr>
    </tbody>
  </table>
</div>

6Code block that scrolls

Long lines in a pre with overflow-x-auto stay on one line.

npm run build -- --mode production --out-dir dist/brio-base --base ./ --sourcemap false --emptyOutDir

<pre class="overflow-x-auto bg-body-tertiary border rounded-3 p-3 small mb-0"><code>npm run build -- --mode production --out-dir dist/brio-base --base ./ --sourcemap false --emptyOutDir</code></pre>

7Chat window

A fixed height message area with overflow-y-auto above a fixed input.

Every detail is handled by people who care about getting it right.

Lab results arrive in your patient portal, usually within 48 hours.

We measure success by how many patients come back and tell their friends.

We work with most insurance providers and explain any costs upfront.

<div class="border rounded-4 d-flex flex-column" style="height:220px;max-width:22rem">
  <div class="overflow-y-auto p-3 d-flex flex-column gap-2 flex-grow-1">
    <div class="align-self-start bg-body-tertiary rounded-3 px-2 py-1 small">
      Every detail is handled by people who care about getting it right.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      Lab results arrive in your patient portal, usually within 48 hours.
    </div>
    <div class="align-self-start bg-body-tertiary rounded-3 px-2 py-1 small">
      We measure success by how many patients come back and tell their friends.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      We work with most insurance providers and explain any costs upfront.
    </div>
  </div>
  <div class="border-top p-2">
    <label class="visually-hidden" for="ut-msg-1253">Message</label>
    <input id="ut-msg-1253" type="text" class="form-control form-control-sm" placeholder="Type a message">
  </div>
</div>

8Scrollable tab strip

Pills in a flex-nowrap row with overflow-x-auto for many categories.

<nav class="d-flex flex-nowrap gap-2 overflow-x-auto pb-1" aria-label="Categories">
  <a href="#" class="btn btn-sm btn-primary rounded-pill text-nowrap">All</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">Dental</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">release</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">Cardiology</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">community</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">project</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">calm</a> 
</nav>

9Terms box

A long text inside a bordered box with overflow-auto, like a licence agreement.

Terms of use

Family plans cover check-ups and vaccinations for everyone under one roof. Book online in two minutes and see a doctor as soon as today. Clear prices, honest advice and no surprises along the way. Our specialists take time to listen and explain every step of your treatment.

We keep things simple, so you can focus on what matters to you. Video consultations let you speak with a doctor from the comfort of home. Modern equipment means faster diagnoses and more comfortable treatment.

Thousands of patients already trust us, and we work hard to keep it that way. Friendly reminders make sure you never miss a check-up or a dose. We keep things simple, so you can focus on what matters to you. Family plans cover check-ups and vaccinations for everyone under one roof.

<div class="border rounded-3 p-3 overflow-auto small bg-body-tertiary" style="height:130px">
  <h3 class="h6">Terms of use</h3>
  <p>Family plans cover check-ups and vaccinations for everyone under one roof. Book online in two minutes and see a doctor as soon as today. Clear prices, honest advice and no surprises along the way. Our specialists take time to listen and explain every step of your treatment.</p>
  <p>We keep things simple, so you can focus on what matters to you. Video consultations let you speak with a doctor from the comfort of home. Modern equipment means faster diagnoses and more comfortable treatment.</p>
  <p class="mb-0">Thousands of patients already trust us, and we work hard to keep it that way. Friendly reminders make sure you never miss a check-up or a dose. We keep things simple, so you can focus on what matters to you. Family plans cover check-ups and vaccinations for everyone under one roof.</p>
</div>

10Visible overflow for a badge

overflow-visible lets a badge stick out of a box that would otherwise clip it.

overflow-hidden6

overflow-visible9

<div class="d-flex gap-4 pt-2">
  <div class="position-relative overflow-hidden border rounded-3 p-3 small">
    overflow-hidden<span class="position-absolute top-0 start-100 translate-middle badge rounded-pill text-bg-danger">6</span>
  </div>
  <div class="position-relative overflow-visible border rounded-3 p-3 small">
    overflow-visible<span class="position-absolute top-0 start-100 translate-middle badge rounded-pill text-bg-danger">9</span>
  </div>
</div>

11Hidden overflow for a cropped title

overflow-hidden with a fixed height clips long text to two lines worth of space.

Healthy smiles start here - Friendly people answer your questions quickly, by phone, chat or email.

Oct 27, 2025

<div class="border rounded-3 p-3" style="max-width:20rem">
  <div class="overflow-hidden fw-semibold lh-sm" style="height:2.5em">
    Healthy smiles start here - Friendly people answer your questions quickly, by phone, chat or email.
  </div>
  <div class="small text-body-secondary mt-1">
    Oct 27, 2025
  </div>
</div>

12Sidebar that scrolls separately

The nav column scrolls with overflow-y-auto while the content stays put.

Lab results arrive in your patient portal, usually within 48 hours. Your records are private, secure and always available when you need them.

<div class="d-flex border rounded-3" style="height:180px">
  <nav class="overflow-y-auto border-end p-2 small flex-shrink-0" style="width:130px" aria-label="Chapters">
    <a href="#" class="d-block py-1">Intro</a><a href="#" class="d-block py-1">Setup</a><a href="#" class="d-block py-1">Layout</a> <a href="#" class="d-block py-1">Colours</a><a href="#" class="d-block py-1">Forms</a><a href="#" class="d-block py-1">Tables</a> <a href="#" class="d-block py-1">Charts</a><a href="#" class="d-block py-1">Deploy</a> 
  </nav>
  <div class="p-3 small">
    Lab results arrive in your patient portal, usually within 48 hours. Your records are private, secure and always available when you need them.
  </div>
</div>

13Image pan area

A large image in an overflow-auto box can be scrolled in both directions.

<div class="overflow-auto border rounded-3" style="height:160px;max-width:26rem">
  <img src="https://images.unsplash.com/photo-1631217873436-b0fa88e71f0a?auto=format&fit=crop&w=1600&h=700&q=70" alt="A simple monthly skin check" width="900" height="394" class="d-block"> 
</div>

14Kanban columns

Columns side by side in overflow-x-auto, each column scrolls with overflow-y-auto.

To do

General practice

Dental care

Health check-ups

Doing

Dental care

Done

Lab tests

<div class="d-flex gap-2 overflow-x-auto pb-1">
  <div class="bg-body-tertiary rounded-3 p-2 flex-shrink-0 overflow-y-auto" style="width:170px;max-height:180px">
    <div class="small fw-semibold mb-2">
      To do
    </div>
    <div class="bg-body border rounded-2 p-2 small mb-2">
      General practice
    </div>
    <div class="bg-body border rounded-2 p-2 small mb-2">
      Dental care
    </div>
    <div class="bg-body border rounded-2 p-2 small">
      Health check-ups
    </div>
  </div>
  <div class="bg-body-tertiary rounded-3 p-2 flex-shrink-0 overflow-y-auto" style="width:170px;max-height:180px">
    <div class="small fw-semibold mb-2">
      Doing
    </div>
    <div class="bg-body border rounded-2 p-2 small">
      Dental care
    </div>
  </div>
  <div class="bg-body-tertiary rounded-3 p-2 flex-shrink-0 overflow-y-auto" style="width:170px;max-height:180px">
    <div class="small fw-semibold mb-2">
      Done
    </div>
    <div class="bg-body border rounded-2 p-2 small">
      Lab tests
    </div>
  </div>
</div>

15Overflow-x hidden

overflow-x-hidden hides content that slides in from the side, like an off-screen panel.

We measure success by how many patients come back and tell their friends.

Panel partly off the edge

<div class="position-relative overflow-x-hidden border rounded-3 p-3" style="height:110px">
  <div class="small">
    We measure success by how many patients come back and tell their friends.
  </div>
  <div class="position-absolute top-0 bg-primary-subtle h-100 p-2 small" style="left:90%;width:200px">
    Panel partly off the edge
  </div>
</div>

16Overflow-y scroll always

overflow-y-scroll always shows the vertical scrollbar, so the width never jumps.

Every detail is handled by people who care about getting it right.

<div class="overflow-y-scroll border rounded-3 p-2 small" style="height:90px">
  Every detail is handled by people who care about getting it right.
</div>

17Notification panel

A dropdown-like panel with header, scrolling body and footer.

Notifications

Video consultations let you speak with a doctor from the comfort of home.

Clear prices, honest advice and no surprises along the way.

Our team has done this many times, so you never have to guess.

We listen first, then build a plan around what you actually need.

View all

<div class="border rounded-3 shadow-sm d-flex flex-column" style="max-width:20rem;height:220px">
  <div class="px-3 py-2 border-bottom fw-semibold small">
    Notifications
  </div>
  <div class="overflow-y-auto flex-grow-1">
    <div class="px-3 py-2 border-bottom small">
      Video consultations let you speak with a doctor from the comfort of home.
    </div>
    <div class="px-3 py-2 border-bottom small">
      Clear prices, honest advice and no surprises along the way.
    </div>
    <div class="px-3 py-2 border-bottom small">
      Our team has done this many times, so you never have to guess.
    </div>
    <div class="px-3 py-2 small">
      We listen first, then build a plan around what you actually need.
    </div>
  </div>
  <a href="#" class="px-3 py-2 border-top small text-center">View all</a> 
</div>

18Clip a decorative shape

A big circle partly outside its panel is cut off by overflow-hidden.

Care for the whole family

Book online in two minutes and see a doctor as soon as today.

<div class="position-relative overflow-hidden text-bg-primary rounded-4 p-4">
  <div class="position-absolute bg-white bg-opacity-25 rounded-circle" style="width:180px;height:180px;right:-60px;top:-60px">
  </div>
  <h3 class="h5 position-relative">Care for the whole family</h3>
  <p class="small mb-0 position-relative">Book online in two minutes and see a doctor as soon as today.</p>
</div>

19Long word handling

overflow-hidden plus text-truncate versus text-break for an unbreakable string.

downloads/brio-base/assets/very-long-file-name-without-any-spaces-at-all.zip

<div class="row g-2 small">
  <div class="col-sm-6">
    <div class="border rounded-3 p-2 text-truncate">
      downloads/brio-base/assets/very-long-file-name-without-any-spaces-at-all.zip
    </div>
  </div>
  <div class="col-sm-6">
    <div class="border rounded-3 p-2 text-break">
      downloads/brio-base/assets/very-long-file-name-without-any-spaces-at-all.zip
    </div>
  </div>
</div>

20Responsive table wrapper

table-responsive is the helper made of overflow-x-auto for tables.

Plan	Users	Storage	Support	API	Price
Pro	10	143 GB	Email and chat	Unlimited	$79.58

<div class="table-responsive border rounded-3">
  <table class="table table-sm mb-0 text-nowrap">
    <thead>
      <tr>
        <th scope="col">Plan</th>
        <th scope="col">Users</th>
        <th scope="col">Storage</th>
        <th scope="col">Support</th>
        <th scope="col">API</th>
        <th scope="col">Price</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td>Pro</td>
        <td>10</td>
        <td>143 GB</td>
        <td>Email and chat</td>
        <td>Unlimited</td>
        <td>$79.58</td>
      </tr>
    </tbody>
  </table>
</div>