Link utilities style anchors without custom CSS: link-opacity-* fades a link, link-offset-* moves the underline, link-underline-{colour} and link-underline-opacity-* colour and fade the underline. Each has a -hover variant, and icon-link plus icon-link-hover align and animate icons beside link text.
1Link opacity
link-opacity-10 to -100 fade a coloured link.
<figure class="mb-0">
<div inert>
<div class="d-grid gap-1">
<a href="#" class="link-primary link-opacity-100">link-opacity-100</a> <a href="#" class="link-primary link-opacity-75">link-opacity-75</a> <a href="#" class="link-primary link-opacity-50">link-opacity-50</a> <a href="#" class="link-primary link-opacity-25">link-opacity-25</a> <a href="#" class="link-primary link-opacity-10">link-opacity-10</a>
</div>
</div>
<figcaption class="small text-body-secondary mt-2 mb-0">Below 100 the link text no longer reaches 4.5:1 - keep links at full strength and use the faded steps on hover.</figcaption>
</figure>2Opacity on hover
link-opacity-*-hover changes the opacity only while the pointer is over the link - the resting link stays at full strength (AA).
<div class="d-grid gap-1">
<a href="#" class="link-primary link-opacity-100 link-opacity-75-hover">100, 75 on hover</a> <a href="#" class="link-primary link-opacity-100 link-opacity-50-hover">100, 50 on hover</a> <a href="#" class="link-primary link-opacity-100 link-opacity-25-hover">100, 25 on hover</a>
</div>3Underline offset
link-offset-1, -2 and -3 move the underline away from the text.
<div class="d-flex flex-wrap gap-4">
<a href="#" class="link-offset-1">link-offset-1</a> <a href="#" class="link-offset-2">link-offset-2</a> <a href="#" class="link-offset-3">link-offset-3</a>
</div>4Offset on hover
link-offset-3-hover lowers the underline while hovering.
<div class="d-flex flex-wrap gap-4">
<a href="#" class="link-offset-1 link-offset-3-hover">Loyalty rewards</a> <a href="#" class="link-offset-2 link-offset-3-hover link-underline-opacity-50">Secure checkout</a>
</div>5Underline colours
link-underline-{colour} colours only the underline, independent of the text.
<div class="d-flex flex-wrap gap-3">
<a href="#" class="link-body-emphasis link-underline link-underline-primary">primary</a> <a href="#" class="link-body-emphasis link-underline link-underline-success">success</a> <a href="#" class="link-body-emphasis link-underline link-underline-danger">danger</a> <a href="#" class="link-body-emphasis link-underline link-underline-warning">warning</a> <a href="#" class="link-body-emphasis link-underline link-underline-info">info</a>
</div>6Underline opacity
link-underline-opacity-0 to -100 fade the underline while the text keeps its colour.
<div class="d-grid gap-1">
<a href="#" class="link-offset-2 link-underline link-underline-opacity-0">link-underline-opacity-0</a> <a href="#" class="link-offset-2 link-underline link-underline-opacity-10">link-underline-opacity-10</a> <a href="#" class="link-offset-2 link-underline link-underline-opacity-25">link-underline-opacity-25</a> <a href="#" class="link-offset-2 link-underline link-underline-opacity-50">link-underline-opacity-50</a> <a href="#" class="link-offset-2 link-underline link-underline-opacity-75">link-underline-opacity-75</a> <a href="#" class="link-offset-2 link-underline link-underline-opacity-100">link-underline-opacity-100</a>
</div>7Underline appears on hover
link-underline-opacity-0 with link-underline-opacity-75-hover: the underline fades in on hover.
<ul class="list-unstyled mb-0 d-grid gap-1">
<li><a href="#" class="link-offset-2 link-underline link-underline-opacity-0 link-underline-opacity-75-hover">Style that works as hard as you do</a></li>
<li><a href="#" class="link-offset-2 link-underline link-underline-opacity-0 link-underline-opacity-75-hover">Quality goods delivered to your door</a></li>
<li><a href="#" class="link-offset-2 link-underline link-underline-opacity-0 link-underline-opacity-75-hover">The new collection has landed</a></li>
</ul>8Everything combined
Colour, opacity, offset and underline utilities on one link, with hover states.
<a href="#" class="link-success link-offset-2 link-offset-3-hover link-underline-success link-underline-opacity-25 link-underline-opacity-100-hover link-opacity-75 link-opacity-100-hover fw-semibold">Easy exchanges <i class="bi bi-arrow-right" aria-hidden="true"></i></a>9Icon link
icon-link aligns an icon with the text and spaces it with a gap.
<div class="d-flex flex-wrap gap-4">
<a href="#" class="icon-link"><i class="bi bi-file-earmark-pdf" aria-hidden="true"></i> Download PDF</a> <a href="#" class="icon-link">Open in editor <i class="bi bi-box-arrow-up-right" aria-hidden="true"></i></a>
</div>10Icon moves on hover
icon-link-hover nudges the trailing icon when you hover the link.
<a href="#" class="icon-link icon-link-hover link-offset-2">Explore beauty <i class="bi bi-arrow-right" aria-hidden="true"></i></a>11Quiet body links
link-body-emphasis with a faint underline suits links inside long text.
Not sure about the size? Our fit guide and live chat help you choose. 30-day returns Members get early access to new drops and prices only they can see.
<p class="mb-0">Not sure about the size? Our fit guide and live chat help you choose. <a href="#" class="link-body-emphasis link-offset-2 link-underline-opacity-25 link-underline-opacity-75-hover">30-day returns</a> Members get early access to new drops and prices only they can see.</p>12Footer link columns
Secondary links without underline that gain it on hover.
<div class="row g-3 small">
<div class="col-6 col-md-3">
<div class="fw-semibold mb-2">
Product
</div>
<ul class="list-unstyled d-grid gap-1 mb-0">
<li><a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-100-hover">Features</a></li>
<li><a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-100-hover">Pricing</a></li>
</ul>
</div>
<div class="col-6 col-md-3">
<div class="fw-semibold mb-2">
Company
</div>
<ul class="list-unstyled d-grid gap-1 mb-0">
<li><a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-100-hover">About</a></li>
<li><a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-100-hover">Jobs</a></li>
</ul>
</div>
</div>13Path links
A breadcrumb-like path built from links with an offset and a subtle underline.
<nav class="small" aria-label="Path">
<a href="#" class="link-secondary link-offset-2 link-underline-opacity-25">Home</a> / <a href="#" class="link-secondary link-offset-2 link-underline-opacity-25">Outdoor</a> / <span class="text-body-emphasis" aria-current="page">Cotton throw</span>
</nav>14Links on a dark surface
link-light and link-warning keep contrast on bg-dark.
<div class="bg-dark rounded-3 p-3 d-flex flex-wrap gap-3" data-ui-theme="dark">
<a href="#" class="link-light link-offset-2">link-light</a> <a href="#" class="link-light link-opacity-75 link-opacity-100-hover">link-light 75</a> <a href="#" class="link-warning link-underline-opacity-50">link-warning</a>
</div>15Focus ring on a link
focus-ring adds a soft focus outline; focus-ring-{colour} changes its colour. Tab to the links to see it.
<div class="d-flex flex-wrap gap-3">
<a href="#" class="focus-ring py-1 px-2 rounded-2 text-decoration-none">Default focus ring</a> <a href="#" class="focus-ring focus-ring-success py-1 px-2 rounded-2 text-decoration-none link-success">Success focus ring</a>
</div>16Tag links
Small tag links whose underline appears on hover.
<div class="d-flex flex-wrap gap-2 small">
<a href="#" class="link-primary link-underline-opacity-0 link-underline-opacity-100-hover">#design</a> <a href="#" class="link-primary link-underline-opacity-0 link-underline-opacity-100-hover">#routine</a> <a href="#" class="link-primary link-underline-opacity-0 link-underline-opacity-100-hover">#honest</a> <a href="#" class="link-primary link-underline-opacity-0 link-underline-opacity-100-hover">#community</a>
</div>17Card title link
A title link without underline plus stretched-link for a fully clickable card.
Dec 17, 2025
Thoughtful goods for a simpler home
Order before 2 pm and most items leave our warehouse the same day.
<div class="position-relative border rounded-4 p-3" style="max-width:22rem">
<div class="small text-body-secondary">
Dec 17, 2025
</div>
<a href="#" class="stretched-link link-body-emphasis link-underline-opacity-0 fw-semibold">Thoughtful goods for a simpler home</a>
<p class="small mb-0 mt-1">Order before 2 pm and most items leave our warehouse the same day.</p>
</div>18Table of contents
link-secondary entries with the current one in link-primary and a thicker offset.
<nav class="d-grid gap-1 small border-start ps-3" aria-label="On this page">
<a href="#" class="link-primary link-offset-3 fw-semibold" aria-current="true">Overview</a> <a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-50-hover">Installation</a> <a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-50-hover">Configuration</a> <a href="#" class="link-secondary link-underline-opacity-0 link-underline-opacity-50-hover">FAQ</a>
</nav>19Destructive text link
link-danger with a danger underline for actions like removing an item.
Ceramic mug
Remove
<div class="d-flex justify-content-between align-items-center border rounded-3 p-3" style="max-width:24rem">
<span>Ceramic mug</span> <a href="#" class="link-danger link-underline-danger link-underline-opacity-25 link-underline-opacity-100-hover small">Remove</a>
</div>20Download links list
icon-link entries with file sizes and opacity on the meta text.
- emberium-deck.zip 15 MB
- user-guide.pdf 2 MB
<ul class="list-unstyled mb-0 d-grid gap-2">
<li><a href="#" class="icon-link icon-link-hover"><i class="bi bi-file-earmark-zip" aria-hidden="true"></i> emberium-deck.zip <i class="bi bi-download" aria-hidden="true"></i></a> <span class="small text-body-secondary">15 MB</span></li>
<li><a href="#" class="icon-link icon-link-hover"><i class="bi bi-file-earmark-zip" aria-hidden="true"></i> user-guide.pdf <i class="bi bi-download" aria-hidden="true"></i></a> <span class="small text-body-secondary">2 MB</span></li>
</ul>