A clearfix makes a parent element wrap around its floated children again, so borders, backgrounds and the content that follows stay where you expect. The examples outline every parent with a dashed border and every floated box with a solid one, so you can see the helper at work.
1Two floated buttons
The parent wraps a float-start and a float-end button, so its dashed border surrounds both.
Dashed border: the .clearfix parent. It keeps its height even though both children float.
<div class="hp-cf clearfix">
<button type="button" class="btn btn-outline-secondary float-start">Back</button>
<button type="button" class="btn btn-primary float-end">Continue</button>
</div>
<p class="small text-body-secondary mt-2 mb-0">Dashed border: the .clearfix parent. It keeps its height even though both children float.</p>
2With and without clearfix
Side by side comparison: without the helper the parent collapses to its padding and the float hangs out.
A quote floated to the end of the paragraph; the article wrapper is cleared so the next section starts below.
"Cooked with care, served with a smile"
We listen first, then build a plan around what you actually need. Every dish is cooked to order, so tell us if you would like anything changed. Every detail is handled by people who care about getting it right.
Friendly people answer your questions quickly, by phone, chat or email.
Next section starts on a clean line
<article class="hp-cf clearfix">
<blockquote class="hp-fl float-sm-end ms-sm-3 mb-2 p-3 fs-6 fst-italic">"Cooked with care, served with a smile"</blockquote>
<p class="mb-2">We listen first, then build a plan around what you actually need. Every dish is cooked to order, so tell us if you would like anything changed. Every detail is handled by people who care about getting it right.</p>
<p class="mb-0">Friendly people answer your questions quickly, by phone, chat or email.</p>
</article>
<h3 class="h6 mt-3 mb-0">Next section starts on a clean line</h3>
8Comment with avatar
A comment row with a floated avatar and a floated time stamp.
22 min ago
Arjun Lindqvist
We keep things simple, so you can focus on what matters to you.
<div class="hp-cf clearfix">
<img src="../assets/img/avatar-3.svg" alt="Arjun Lindqvist" width="40" height="40" class="rounded-circle float-start me-2"> <small class="hp-fl float-end px-2 text-body-secondary">22 min ago</small> <strong class="d-block">Arjun Lindqvist</strong>
<p class="small mb-0">We keep things simple, so you can focus on what matters to you.</p>
</div>
9Responsive floats
float-md-start and float-md-end only float from the md breakpoint; below it the boxes stack.
An icon floated left, a time stamp floated right and the message in between.
19 hours ago
Our menu changes with the seasons and the best produce from nearby farms.
<div class="hp-cf clearfix bg-body">
<span class="hp-fl float-start me-2 px-2 py-1 text-primary"><i class="bi bi-bell-fill" aria-hidden="true"></i></span> <small class="float-end text-body-secondary">19 hours ago</small>
<p class="small mb-0">Our menu changes with the seasons and the best produce from nearby farms.</p>
</div>
16Pricing card label
A floated badge in the top corner of a pricing card body.
A product image floated to the end of a card body with the description flowing around it.
Garden salad
Vegan, vegetarian and gluten-free dishes are marked clearly on every menu.
<div class="card">
<div class="card-body hp-cf clearfix">
<img src="../assets/img/product-3.svg" alt="Garden salad" width="110" height="110" class="hp-fl float-end ms-3 rounded">
<h3 class="h6">Garden salad</h3>
<p class="small mb-0">Vegan, vegetarian and gluten-free dishes are marked clearly on every menu.</p>
</div>
</div>
20Sidebar and content
A classic two-column float layout: a floated nav box and a content box; clearfix closes the row.
Five things we learned this year
We measure success by how many guests come back and tell their friends. Bread is baked every morning and pasta is rolled by hand in our kitchen. Order for pickup or delivery and enjoy the same dishes at home. Cooking classes on Saturday mornings teach you our favourite recipes.
<div class="hp-cf clearfix">
<nav class="hp-fl float-sm-start me-sm-3 mb-2 p-2" aria-label="Section">
<ul class="nav flex-column small">
<li class="nav-item"><a class="nav-link active py-1" aria-current="page" href="#">Overview</a></li>
<li class="nav-item"><a class="nav-link py-1" href="#">Members</a></li>
<li class="nav-item"><a class="nav-link py-1" href="#">Billing</a></li>
</ul>
</nav>
<div class="overflow-hidden">
<h3 class="h6">Five things we learned this year</h3>
<p class="small mb-0">We measure success by how many guests come back and tell their friends. Bread is baked every morning and pasta is rolled by hand in our kitchen. Order for pickup or delivery and enjoy the same dishes at home. Cooking classes on Saturday mornings teach you our favourite recipes.</p>
</div>
</div>