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

Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment. Our clinic is fully accessible, with free parking right outside. Every detail is handled by people who care about getting it right.

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">
      Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment. Our clinic is fully accessible, with free parking right outside. Every detail is handled by people who care about getting it right.
    </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">
      Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment. Our clinic is fully accessible, with free parking right outside. Every detail is handled by people who care about getting it right.
    </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">
      Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment. Our clinic is fully accessible, with free parking right outside. Every detail is handled by people who care about getting it right.
    </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">
      Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment. Our clinic is fully accessible, with free parking right outside. Every detail is handled by people who care about getting it right.
    </div>
  </div>
</div>

2Horizontal scroll only

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

Lab tests

Telehealth

Health check-ups

General practice

Dental care

<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">
      Lab tests
    </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">
      Health check-ups
    </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">
      Dental care
    </div>
  </div>
</div>

3Vertical scroll only

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

Luna Varga
Mia Okafor
Leo Moreau
Felix Quinn
Nora Whitaker
Mateo Mensah

<ul class="list-unstyled border rounded-3 overflow-y-auto mb-0" style="max-height:150px">
  <li class="px-3 py-2 border-bottom">Luna Varga</li>
  <li class="px-3 py-2 border-bottom">Mia Okafor</li>
  <li class="px-3 py-2 border-bottom">Leo Moreau</li>
  <li class="px-3 py-2 border-bottom">Felix Quinn</li>
  <li class="px-3 py-2 border-bottom">Nora Whitaker</li>
  <li class="px-3 py-2">Mateo Mensah</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
#TX-4854	Finn Novak	Oslo	Mar 21, 2026	Shipped	$209.25
#ORD-6968	Ravi Nguyen	Copenhagen	Oct 4, 2025	Completed	$686.98

<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>#TX-4854</td>
        <td>Finn Novak</td>
        <td>Oslo</td>
        <td>Mar 21, 2026</td>
        <td>Shipped</td>
        <td>$209.25</td>
      </tr>
      <tr>
        <td>#ORD-6968</td>
        <td>Ravi Nguyen</td>
        <td>Copenhagen</td>
        <td>Oct 4, 2025</td>
        <td>Completed</td>
        <td>$686.98</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-labs --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-labs --base ./ --sourcemap false --emptyOutDir</code></pre>

7Chat window

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

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

Family plans cover check-ups and vaccinations for everyone under one roof.

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

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

<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">
      Clear prices, honest advice and no surprises along the way.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      Family plans cover check-ups and vaccinations for everyone under one roof.
    </div>
    <div class="align-self-start bg-body-tertiary rounded-3 px-2 py-1 small">
      Lab results arrive in your patient portal, usually within 48 hours.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      We listen first, then build a plan around what you actually need.
    </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">guide</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">tips</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">journey</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">focused</a> 
</nav>

9Terms box

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

Terms of use

Thousands of patients already trust us, and we work hard to keep it that way. We work with most insurance providers and explain any costs upfront. Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment.

Same-day appointments are available for urgent needs on weekdays. Book online in two minutes and see a doctor as soon as today. We keep things simple, so you can focus on what matters to you.

Friendly people answer your questions quickly, by phone, chat or email. Modern equipment means faster diagnoses and more comfortable treatment. Start in minutes and get help from a real person whenever you need it. Children are welcome, and our paediatric team knows how to make them smile.

<div class="border rounded-3 p-3 overflow-auto small bg-body-tertiary" style="height:130px">
  <h3 class="h6">Terms of use</h3>
  <p>Thousands of patients already trust us, and we work hard to keep it that way. We work with most insurance providers and explain any costs upfront. Video consultations let you speak with a doctor from the comfort of home. Our specialists take time to listen and explain every step of your treatment.</p>
  <p>Same-day appointments are available for urgent needs on weekdays. Book online in two minutes and see a doctor as soon as today. We keep things simple, so you can focus on what matters to you.</p>
  <p class="mb-0">Friendly people answer your questions quickly, by phone, chat or email. Modern equipment means faster diagnoses and more comfortable treatment. Start in minutes and get help from a real person whenever you need it. Children are welcome, and our paediatric team knows how to make them smile.</p>
</div>

10Visible overflow for a badge

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

overflow-hidden5

overflow-visible2

<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">5</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">2</span>
  </div>
</div>

11Hidden overflow for a cropped title

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

Get answers, get better - Our team has done this many times, so you never have to guess.

May 11, 2026

<div class="border rounded-3 p-3" style="max-width:20rem">
  <div class="overflow-hidden fw-semibold lh-sm" style="height:2.5em">
    Get answers, get better - Our team has done this many times, so you never have to guess.
  </div>
  <div class="small text-body-secondary mt-1">
    May 11, 2026
  </div>
</div>

12Sidebar that scrolls separately

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

Your records are private, secure and always available when you need them. Friendly reminders make sure you never miss a check-up or a dose.

<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">
    Your records are private, secure and always available when you need them. Friendly reminders make sure you never miss a check-up or a dose.
  </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="Simple habits for a healthier back" 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

General practice

Physiotherapy

Doing

Telehealth

Done

General practice

<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">
      General practice
    </div>
    <div class="bg-body border rounded-2 p-2 small">
      Physiotherapy
    </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">
      General practice
    </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.

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

<div class="overflow-y-scroll border rounded-3 p-2 small" style="height:90px">
  Thousands of patients already trust us, and we work hard to keep it that way.
</div>

17Notification panel

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

Notifications

Our clinic is fully accessible, with free parking right outside.

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

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

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

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">
      Our clinic is fully accessible, with free parking right outside.
    </div>
    <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">
      Our team has done this many times, so you never have to guess.
    </div>
    <div class="px-3 py-2 small">
      Lab results arrive in your patient portal, usually within 48 hours.
    </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

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

<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">Start in minutes and get help from a real person whenever you need it.</p>
</div>

19Long word handling

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

downloads/junoly-labs/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-labs/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-labs/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	44	154 GB	Email and chat	Unlimited	$36.26

<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>44</td>
        <td>154 GB</td>
        <td>Email and chat</td>
        <td>Unlimited</td>
        <td>$36.26</td>
      </tr>
    </tbody>
  </table>
</div>