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

Thousands of patients already trust us, and we work hard to keep it that way. Family plans cover check-ups and vaccinations for everyone under one roof. Friendly reminders make sure you never miss a check-up or a dose. Video consultations let you speak with a doctor from the comfort of home.

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">
      Thousands of patients already trust us, and we work hard to keep it that way. Family plans cover check-ups and vaccinations for everyone under one roof. Friendly reminders make sure you never miss a check-up or a dose. Video consultations let you speak with a doctor from the comfort of home.
    </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">
      Thousands of patients already trust us, and we work hard to keep it that way. Family plans cover check-ups and vaccinations for everyone under one roof. Friendly reminders make sure you never miss a check-up or a dose. Video consultations let you speak with a doctor from the comfort of home.
    </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">
      Thousands of patients already trust us, and we work hard to keep it that way. Family plans cover check-ups and vaccinations for everyone under one roof. Friendly reminders make sure you never miss a check-up or a dose. Video consultations let you speak with a doctor from the comfort of home.
    </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">
      Thousands of patients already trust us, and we work hard to keep it that way. Family plans cover check-ups and vaccinations for everyone under one roof. Friendly reminders make sure you never miss a check-up or a dose. Video consultations let you speak with a doctor from the comfort of home.
    </div>
  </div>
</div>

2Horizontal scroll only

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

Dental care

General practice

Lab tests

Physiotherapy

<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">
      Dental care
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Dental care
    </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">
      Lab tests
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Physiotherapy
    </div>
  </div>
</div>

3Vertical scroll only

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

Diego Ibrahim
Liam Haddad
Ruby Mensah
Zoe Nguyen
Amara Quinn
Lucas Harlow

<ul class="list-unstyled border rounded-3 overflow-y-auto mb-0" style="max-height:150px">
  <li class="px-3 py-2 border-bottom">Diego Ibrahim</li>
  <li class="px-3 py-2 border-bottom">Liam Haddad</li>
  <li class="px-3 py-2 border-bottom">Ruby Mensah</li>
  <li class="px-3 py-2 border-bottom">Zoe Nguyen</li>
  <li class="px-3 py-2 border-bottom">Amara Quinn</li>
  <li class="px-3 py-2">Lucas Harlow</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-9483	Aria Silva	Denver	Feb 26, 2026	Overdue	$97.22
#INV-6024	Nadia Moreau	Porto	Oct 14, 2025	Cancelled	$63.33

<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-9483</td>
        <td>Aria Silva</td>
        <td>Denver</td>
        <td>Feb 26, 2026</td>
        <td>Overdue</td>
        <td>$97.22</td>
      </tr>
      <tr>
        <td>#INV-6024</td>
        <td>Nadia Moreau</td>
        <td>Porto</td>
        <td>Oct 14, 2025</td>
        <td>Cancelled</td>
        <td>$63.33</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/junoly --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/junoly --base ./ --sourcemap false --emptyOutDir</code></pre>

7Chat window

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

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

Your records are private, secure and always available when you need them.

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

Start in minutes and get help from a real person whenever you need it.

<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">
      Book online in two minutes and see a doctor as soon as today.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      Your records are private, secure and always available when you need them.
    </div>
    <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">
      Start in minutes and get help from a real person whenever you need it.
    </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">Pediatrics</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">product</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">tips</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">update</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

Our clinic is fully accessible, with free parking right outside. 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. Clear prices, honest advice and no surprises along the way.

We work with most insurance providers and explain any costs upfront. Family plans cover check-ups and vaccinations for everyone under one roof. Modern equipment means faster diagnoses and more comfortable treatment.

Friendly people answer your questions quickly, by phone, chat or email. Our clinic is fully accessible, with free parking right outside. We keep things simple, so you can focus on what matters to you. Every detail is handled by people who care about getting it right.

<div class="border rounded-3 p-3 overflow-auto small bg-body-tertiary" style="height:130px">
  <h3 class="h6">Terms of use</h3>
  <p>Our clinic is fully accessible, with free parking right outside. 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. Clear prices, honest advice and no surprises along the way.</p>
  <p>We work with most insurance providers and explain any costs upfront. Family plans cover check-ups and vaccinations for everyone under one roof. Modern equipment means faster diagnoses and more comfortable treatment.</p>
  <p class="mb-0">Friendly people answer your questions quickly, by phone, chat or email. Our clinic is fully accessible, with free parking right outside. We keep things simple, so you can focus on what matters to you. Every detail is handled by people who care about getting it right.</p>
</div>

10Visible overflow for a badge

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

overflow-hidden8

overflow-visible7

<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">8</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">7</span>
  </div>
</div>

11Hidden overflow for a cropped title

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

See a specialist this week - Friendly reminders make sure you never miss a check-up or a dose.

May 22, 2026

<div class="border rounded-3 p-3" style="max-width:20rem">
  <div class="overflow-hidden fw-semibold lh-sm" style="height:2.5em">
    See a specialist this week - Friendly reminders make sure you never miss a check-up or a dose.
  </div>
  <div class="small text-body-secondary mt-1">
    May 22, 2026
  </div>
</div>

12Sidebar that scrolls separately

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

Children are welcome, and our paediatric team knows how to make them smile. Book online in two minutes and see a doctor as soon as today.

<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">
    Children are welcome, and our paediatric team knows how to make them smile. Book online in two minutes and see a doctor as soon as today.
  </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-1631217871099-88310a909a32?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

Telehealth

Physiotherapy

Lab tests

Doing

Telehealth

Done

Physiotherapy

<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">
      Telehealth
    </div>
    <div class="bg-body border rounded-2 p-2 small mb-2">
      Physiotherapy
    </div>
    <div class="bg-body border rounded-2 p-2 small">
      Lab tests
    </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">
      Telehealth
    </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">
      Physiotherapy
    </div>
  </div>
</div>

15Overflow-x hidden

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

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

Panel partly off the edge

<div class="position-relative overflow-x-hidden border rounded-3 p-3" style="height:110px">
  <div class="small">
    Our team has done this many times, so you never have to guess.
  </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.

Our specialists take time to listen and explain every step of your treatment.

<div class="overflow-y-scroll border rounded-3 p-2 small" style="height:90px">
  Our specialists take time to listen and explain every step of your treatment.
</div>

17Notification panel

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

Notifications

Start in minutes and get help from a real person whenever you need it.

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

Thousands of patients already trust us, and we work hard to keep it that way.

Your records are private, secure and always available when you need them.

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">
      Start in minutes and get help from a real person whenever you need it.
    </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">
      Thousands of patients already trust us, and we work hard to keep it that way.
    </div>
    <div class="px-3 py-2 small">
      Your records are private, secure and always available when you need them.
    </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.

Healthy smiles start here

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

<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">Healthy smiles start here</h3>
  <p class="small mb-0 position-relative">Lab results arrive in your patient portal, usually within 48 hours.</p>
</div>

19Long word handling

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

downloads/junoly/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/junoly/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/junoly/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	24	478 GB	Email and chat	Unlimited	$26.29

<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>24</td>
        <td>478 GB</td>
        <td>Email and chat</td>
        <td>Unlimited</td>
        <td>$26.29</td>
      </tr>
    </tbody>
  </table>
</div>