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Dropdowns

Toggle contextual overlays for displaying lists of links and more with the Bootstrap dropdown plugin.

Any single .btn can be turned into a dropdown toggle with some markup changes. Here’s how you can put them to work with either <button> elements: 

<div class="dropdown">
									<button class="btn btn-primary dropdown-toggle" type="button"  data-bs-toggle="dropdown" aria-expanded="false">
										Primary Dropdown
									</button>
									<ul class="dropdown-menu border-0 shadow p-3">
										<li><a class="dropdown-item py-2 rounded" href="#">Action</a></li>
										<li><a class="dropdown-item py-2 rounded" href="#">Another action</a></li>
										<li><a class="dropdown-item py-2 rounded" href="#">Something else here</a></li>
									</ul>
								</div>

And with <a> elements:

The best part is you can do this with any button variant, too:

Sizing

Button dropdowns work with buttons of all sizes, including default and split dropdown buttons.

Split button

Similarly, create split button dropdowns with virtually the same markup as single button dropdowns, but with the addition of .dropdown-toggle-split for proper spacing around the dropdown caret.

We use this extra class to reduce the horizontal padding on either side of the caret by 25% and remove the margin-left that’s added for regular button dropdowns. Those extra changes keep the caret centered in the split button and provide a more appropriately sized hit area next to the main button.

Alignment options

Taking most of the options shown above, here’s a small kitchen sink demo of various dropdown alignment options in one place.

Dropdown options

Use data-bs-offset or data-bs-reference to change the location of the dropdown.

Auto close behavior

By default, the dropdown menu is closed when clicking inside or outside the dropdown menu. You can use the autoClose option to change this behavior of the dropdown.

Responsive alignment

If you want to use responsive alignment, disable dynamic positioning by adding the data-bs-display="static" attribute and use the responsive variation classes.

To align right the dropdown menu with the given breakpoint or larger, add .dropdown-menu{-sm|-md|-lg|-xl|-xxl}-end.