Toggle contextual overlays for displaying lists of links and more with the Bootstrap dropdown plugin.
.btn can be turned into a dropdown toggle with some markup changes. Here’s how you can put them to work with either
The best part is you can do this with any button variant, too:
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.
Button dropdowns work with buttons of all sizes, including default and split dropdown buttons.
Trigger dropdown menus above elements by adding
.dropup to the parent element.
Trigger dropdown menus at the right of the elements by adding
.dropend to the parent element
Trigger dropdown menus at the left of the elements by adding
.dropstart to the parent element.
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
To align left the dropdown menu with the given breakpoint or larger, add .dropdown-menu-end and
Taking most of the options shown above, here’s a small kitchen sink demo of various dropdown alignment options in one place.
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.