Basic Buttons
Default
Use the .btn .btn-{color} classes.
Outline
In need of a button, but not the hefty background colors they bring? Replace the default modifier classes with the .btn-outline-* ones to remove all background images and colors on any button.
Rounded
Use a class .rounded-pill with .btn class to create round button.
Button Sizes
Fancy larger or smaller buttons? Add .btn-lg or .btn-sm for additional sizes.
Button Group
Wrap a series of buttons with .btn in .btn-group.
Sizing
Instead of applying button sizing classes to every button in a group, just add .btn-group-* to each .btn-group, including each one when nesting multiple groups.
<div class="btn-group" role="group" aria-label="Basic example">
<button type="button" class="btn btn-primary">Left</button>
<button type="button" class="btn btn-primary">Middle</button>
<button type="button" class="btn btn-primary">Right</button>
</div>
Button States
Make buttons look inactive by adding the disabled boolean attribute to any <button> element. Disabled buttons have pointer-events: none applied to, preventing hover and active states from triggering.
Button Group Nesting
Place a .btn-group within another .btn-group when you want dropdown menus mixed with a series of buttons.
<div class="btn-group" role="group" aria-label="Button group with nested dropdown">
<button type="button" class="btn btn-primary">1</button>
<button type="button" class="btn btn-primary">2</button>
<div class="btn-group" role="group">
<button id="btnGroupDrop1" type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</button>
<ul class="dropdown-menu" aria-labelledby="btnGroupDrop1">
<li><a class="dropdown-item" href="#">Dropdown link</a></li>
<li><a class="dropdown-item" href="#">Dropdown link</a></li>
</ul>
</div>
</div> Vertical Variation
Make a set of buttons appear vertically stacked rather than horizontally. Split button dropdowns are not supported here.
<div class="btn-group-vertical">
...
</div>