Based on Bootstrap Button group.
<abp-button-group>
<abp-button button-type="Secondary">Left</abp-button>
<abp-button button-type="Secondary">Middle</abp-button>
<abp-button button-type="Secondary">Right</abp-button>
</abp-button-group>
<div class="btn-group" role="group">
<button type="button" class="btn btn-secondary">Left</button>
<button type="button" class="btn btn-secondary">Middle</button>
<button type="button" class="btn btn-secondary">Right</button>
</div>
<abp-button-toolbar>
<abp-button-group class="mr-2">
<abp-button button-type="Secondary">1</abp-button>
<abp-button button-type="Secondary">2</abp-button>
<abp-button button-type="Secondary">3</abp-button>
<abp-button button-type="Secondary">4</abp-button>
</abp-button-group>
<abp-button-group class="mr-2">
<abp-button button-type="Secondary">5</abp-button>
<abp-button button-type="Secondary">6</abp-button>
<abp-button button-type="Secondary">7</abp-button>
</abp-button-group>
<abp-button-group>
<abp-button button-type="Secondary">8</abp-button>
</abp-button-group>
</abp-button-toolbar>
<div class="btn-toolbar" role="toolbar">
<div class="btn-group me-2" role="group">
<button type="button" class="btn btn-secondary">1</button>
<button type="button" class="btn btn-secondary">2</button>
<button type="button" class="btn btn-secondary">3</button>
<button type="button" class="btn btn-secondary">4</button>
</div>
<div class="btn-group me-2" role="group">
<button type="button" class="btn btn-secondary">5</button>
<button type="button" class="btn btn-secondary">6</button>
<button type="button" class="btn btn-secondary">7</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="btn btn-secondary">8</button>
</div>
</div>
<abp-button-group size="Large">
...
</abp-button-group>
<abp-button-group>
...
</abp-button-group>
<abp-button-group size="Small">
...
</abp-button-group>
<div class="btn-group btn-group-lg" role="group">
...
</div>
<div class="btn-group" role="group">
...
</div>
<div class="btn-group btn-group-sm" role="group">
...
</div>
<abp-button-group>
<abp-button button-type="Secondary">1</abp-button>
<abp-button button-type="Secondary">2</abp-button>
<abp-dropdown>
<abp-dropdown-button button-type="Secondary" text="Dropdown" />
<abp-dropdown-menu>
<abp-dropdown-item href="#"> Dropdown link </abp-dropdown-item>
<abp-dropdown-item href="#"> Dropdown link </abp-dropdown-item>
</abp-dropdown-menu>
</abp-dropdown>
</abp-button-group>
<div class="btn-group" role="group" aria-label="Button group with nested dropdown">
<button type="button" class="btn btn-secondary">1</button>
<button type="button" class="btn btn-secondary">2</button>
<div class="btn-group" role="group">
<button id="btnGroupDrop1" type="button" class="btn btn-secondary dropdown-toggle" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown
</button>
<div class="dropdown-menu" aria-labelledby="btnGroupDrop1">
<a class="dropdown-item" href="#">Dropdown link</a>
<a class="dropdown-item" href="#">Dropdown link</a>
</div>
</div>
</div>
<abp-button-group direction="Vertical">
...
</abp-button-group>
<div class="btn-group-vertical">
...
</div>