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

More than sixty classes a week, from sunrise yoga to late-night spin. Modern equipment is cleaned, serviced and ready every day. Certified coaches design every session around your level and your goals. Beginners are always welcome, with an intro session included.

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">
      More than sixty classes a week, from sunrise yoga to late-night spin. Modern equipment is cleaned, serviced and ready every day. Certified coaches design every session around your level and your goals. Beginners are always welcome, with an intro session included.
    </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">
      More than sixty classes a week, from sunrise yoga to late-night spin. Modern equipment is cleaned, serviced and ready every day. Certified coaches design every session around your level and your goals. Beginners are always welcome, with an intro session included.
    </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">
      More than sixty classes a week, from sunrise yoga to late-night spin. Modern equipment is cleaned, serviced and ready every day. Certified coaches design every session around your level and your goals. Beginners are always welcome, with an intro session included.
    </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">
      More than sixty classes a week, from sunrise yoga to late-night spin. Modern equipment is cleaned, serviced and ready every day. Certified coaches design every session around your level and your goals. Beginners are always welcome, with an intro session included.
    </div>
  </div>
</div>

2Horizontal scroll only

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

Nutrition plans

Group classes

Yoga

Personal training

<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">
      Nutrition plans
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Nutrition plans
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Group classes
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Yoga
    </div>
  </div>
  <div class="border rounded-3 p-3 flex-shrink-0" style="width:160px">
    <div class="fw-semibold small">
      Personal training
    </div>
  </div>
</div>

3Vertical scroll only

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

Lea Hughes
Ella Morgan
Mason Carter
Sofia Ibrahim
Jonah Rossi
Lucas Kim

<ul class="list-unstyled border rounded-3 overflow-y-auto mb-0" style="max-height:150px">
  <li class="px-3 py-2 border-bottom">Lea Hughes</li>
  <li class="px-3 py-2 border-bottom">Ella Morgan</li>
  <li class="px-3 py-2 border-bottom">Mason Carter</li>
  <li class="px-3 py-2 border-bottom">Sofia Ibrahim</li>
  <li class="px-3 py-2 border-bottom">Jonah Rossi</li>
  <li class="px-3 py-2">Lucas Kim</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-1517836357463-d25dfeac3438?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-1761839258420-5c3e2f2e2a74?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-1129	Ivy Lindqvist	Vancouver	Feb 5, 2026	On hold	$809.76
#PO-2907	Chloe Mensah	Copenhagen	Oct 13, 2026	Approved	$608.60

<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-1129</td>
        <td>Ivy Lindqvist</td>
        <td>Vancouver</td>
        <td>Feb 5, 2026</td>
        <td>On hold</td>
        <td>$809.76</td>
      </tr>
      <tr>
        <td>#PO-2907</td>
        <td>Chloe Mensah</td>
        <td>Copenhagen</td>
        <td>Oct 13, 2026</td>
        <td>Approved</td>
        <td>$608.60</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/aeroium-deck --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/aeroium-deck --base ./ --sourcemap false --emptyOutDir</code></pre>

7Chat window

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

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

Track your progress in the app and see how far you have come.

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

Our recovery spa has a sauna, cold plunge and massage rooms.

<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">
      Start in minutes and get help from a real person whenever you need it.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      Track your progress in the app and see how far you have come.
    </div>
    <div class="align-self-start bg-body-tertiary rounded-3 px-2 py-1 small">
      We listen first, then build a plan around what you actually need.
    </div>
    <div class="align-self-end text-bg-primary rounded-3 px-2 py-1 small">
      Our recovery spa has a sauna, cold plunge and massage rooms.
    </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">Cardio</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">Yoga</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">how-to</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">routine</a> <a href="#" class="btn btn-sm btn-light border rounded-pill text-nowrap">secure</a> 
</nav>

9Terms box

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

Terms of use

Every detail is handled by people who care about getting it right. Clear prices, honest advice and no surprises along the way. Our team has done this many times, so you never have to guess. Community events keep you motivated, from fun runs to workshops.

Small group classes mean your coach knows your name and your form. We keep things simple, so you can focus on what matters to you. Friendly people answer your questions quickly, by phone, chat or email. Pause or change your membership any time, with no long contracts.

Open 24 hours, so you can train whenever it suits your day. Nutrition plans fit your routine and the food you actually enjoy. We measure success by how many members come back and tell their friends. Beginners are always welcome, with an intro session included.

<div class="border rounded-3 p-3 overflow-auto small bg-body-tertiary" style="height:130px">
  <h3 class="h6">Terms of use</h3>
  <p>Every detail is handled by people who care about getting it right. Clear prices, honest advice and no surprises along the way. Our team has done this many times, so you never have to guess. Community events keep you motivated, from fun runs to workshops.</p>
  <p>Small group classes mean your coach knows your name and your form. We keep things simple, so you can focus on what matters to you. Friendly people answer your questions quickly, by phone, chat or email. Pause or change your membership any time, with no long contracts.</p>
  <p class="mb-0">Open 24 hours, so you can train whenever it suits your day. Nutrition plans fit your routine and the food you actually enjoy. We measure success by how many members come back and tell their friends. Beginners are always welcome, with an intro session included.</p>
</div>

10Visible overflow for a badge

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

overflow-hidden1

overflow-visible5

<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">1</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">5</span>
  </div>
</div>

11Hidden overflow for a cropped title

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

Stronger every single day - Pause or change your membership any time, with no long contracts.

Dec 9, 2025

<div class="border rounded-3 p-3" style="max-width:20rem">
  <div class="overflow-hidden fw-semibold lh-sm" style="height:2.5em">
    Stronger every single day - Pause or change your membership any time, with no long contracts.
  </div>
  <div class="small text-body-secondary mt-1">
    Dec 9, 2025
  </div>
</div>

12Sidebar that scrolls separately

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

Modern equipment is cleaned, serviced and ready every day. We listen first, then build a plan around what you actually need.

<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">
    Modern equipment is cleaned, serviced and ready every day. We listen first, then build a plan around what you actually need.
  </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-1541534741688-6078c6bfb5c5?auto=format&fit=crop&w=1600&h=700&q=70" alt="Looking back at a busy season" 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

Online coaching

Recovery spa

Personal training

Doing

Nutrition plans

Done

Group classes

<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">
      Online coaching
    </div>
    <div class="bg-body border rounded-2 p-2 small mb-2">
      Recovery spa
    </div>
    <div class="bg-body border rounded-2 p-2 small">
      Personal training
    </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">
      Nutrition plans
    </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">
      Group classes
    </div>
  </div>
</div>

15Overflow-x hidden

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

Our recovery spa has a sauna, cold plunge and massage rooms.

Panel partly off the edge

<div class="position-relative overflow-x-hidden border rounded-3 p-3" style="height:110px">
  <div class="small">
    Our recovery spa has a sauna, cold plunge and massage rooms.
  </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.

Nutrition plans fit your routine and the food you actually enjoy.

<div class="overflow-y-scroll border rounded-3 p-2 small" style="height:90px">
  Nutrition plans fit your routine and the food you actually enjoy.
</div>

17Notification panel

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

Notifications

Open 24 hours, so you can train whenever it suits your day.

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

Online coaching keeps you on track when you travel.

Track your progress in the app and see how far you have come.

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">
      Open 24 hours, so you can train whenever it suits your day.
    </div>
    <div class="px-3 py-2 border-bottom small">
      Every detail is handled by people who care about getting it right.
    </div>
    <div class="px-3 py-2 border-bottom small">
      Online coaching keeps you on track when you travel.
    </div>
    <div class="px-3 py-2 small">
      Track your progress in the app and see how far you have come.
    </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.

Your fitness journey starts now

Certified coaches design every session around your level and your goals.

<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">Your fitness journey starts now</h3>
  <p class="small mb-0 position-relative">Certified coaches design every session around your level and your goals.</p>
</div>

19Long word handling

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

downloads/aeroium-deck/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/aeroium-deck/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/aeroium-deck/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	18	333 GB	Email and chat	Unlimited	$31.69

<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>18</td>
        <td>333 GB</td>
        <td>Email and chat</td>
        <td>Unlimited</td>
        <td>$31.69</td>
      </tr>
    </tbody>
  </table>
</div>