Dropdowns
Dropdowns are toggleable, contextual overlays for displaying lists of links and more. They’re made interactive with the included Bootstrap dropdown javascript plugin. Read the
Basic Example
Wrap the dropdown’s toggle (your button or link) and the dropdown menu within .dropdown, or another element that declares position relative. Dropdowns can be triggered from link or button elements to better fit your potential needs.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>Dropdown variations
Add class .btn-* for solid colored buttons.
<div class="btn-group">
<button type="button" class="btn btn-primary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Primary</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>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.
<div class="btn-group">
<button type="button" class="btn btn-primary">Primary</button>
<button type="button" class="btn btn-primary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<span class="sr-only">Toggle Dropdown</span>
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>Sizing
Button dropdowns work with buttons of all sizes, including default and split dropdown buttons.
<!-- Large button groups (default and split) -->
<div class="btn-group">
<button class="btn btn-secondary btn-lg dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Large button
</button>
<div class="dropdown-menu">
...
</div>
</div>
<div class="btn-group">
<button class="btn btn-secondary btn-lg" type="button">
Large split button
</button>
<button type="button" class="btn btn-lg btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<span class="sr-only">Toggle Dropdown</span>
</button>
<div class="dropdown-menu">
...
</div>
</div>
<!-- Small button groups (default and split) -->
<div class="btn-group">
<button class="btn btn-secondary btn-sm dropdown-toggle" type="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Small button
</button>
<div class="dropdown-menu">
...
</div>
</div>
<div class="btn-group">
<button class="btn btn-secondary btn-sm" type="button">
Small split button
</button>
<button type="button" class="btn btn-sm btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<span class="sr-only">Toggle Dropdown</span>
</button>
<div class="dropdown-menu">
...
</div>
</div>Dropup
Trigger dropdown menus above elements by adding .dropup to the parent element.
<div class="btn-group dropup">
<button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropup
</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>Dropright
Trigger dropdown menus at the right of the elements by adding .dropright to the parent element.
<!-- Default dropright button -->
<div class="btn-group dropright">
<button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropright
</button>
<div class="dropdown-menu">
<!-- Dropdown menu links -->
</div>
</div>
<!-- Split dropright button -->
<div class="btn-group dropright">
<button type="button" class="btn btn-secondary">
Split dropright
</button>
<button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<span class="sr-only">Toggle Dropright</span>
</button>
<div class="dropdown-menu">
<!-- Dropdown menu links -->
</div>
</div>Dropleft
Trigger dropdown menus at the right of the elements by adding .dropleft to the parent element.
<!-- Default dropleft button -->
<div class="btn-group dropleft">
<button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropleft
</button>
<div class="dropdown-menu">
<!-- Dropdown menu links -->
</div>
</div>
<!-- Split dropleft button -->
<div class="btn-group">
<div class="btn-group dropleft" role="group">
<button type="button" class="btn btn-secondary dropdown-toggle dropdown-toggle-split" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
<span class="sr-only">Toggle Dropleft</span>
</button>
<div class="dropdown-menu">
<!-- Dropdown menu links -->
</div>
</div>
<button type="button" class="btn btn-secondary">
Split dropleft
</button>
</div>Active menu item
Add .active to items in the dropdown to style them as active.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton1" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton1">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item active" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>disabled menu item
Add .disabled to items in the dropdown to style them as active.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton2" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton2">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item disabled" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>Dropdown header
Add a header to label sections of actions in any dropdown menu.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton3" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton3">
<h6 class="dropdown-header">Dropdown header</h6>
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>Dropdown dividers
Add a header to label sections of actions in any dropdown menu.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton4" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton4">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Separated link</a>
</div>
</div>Text in dropdown
Place any freeform text within a dropdown menu with text and use spacing utilities. Note that you’ll likely need additional sizing styles to constrain the menu width.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton5" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu p-4 text-muted" aria-labelledby="dropdownMenuButton5">
<p>Some example text that's free-flowing within the dropdown menu.</p>
<p class="mb-0">And this is more example text.</p>
</div>
</div>Forms in dropdown
Put a form within a dropdown menu, or make it into a dropdown menu, and use margin or padding utilities to give it the negative space you require.
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton6" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<form class="dropdown-menu p-4" aria-labelledby="dropdownMenuButton6">
<div class="form-group">
<label for="exampleDropdownFormEmail2">Email address</label>
<input type="email" class="form-control" id="exampleDropdownFormEmail2" placeholder="http://yanshi.sucainiu.com/sucai/2019/0925/1569421413/demo_1/pages/ui-components/email@example.com">
</div>
<div class="form-group">
<label for="exampleDropdownFormPassword2">Password</label>
<input type="password" class="form-control" id="exampleDropdownFormPassword2" placeholder="Password">
</div>
<div class="form-group">
<div class="form-check">
<input type="checkbox" class="form-check-input" id="dropdownCheck2">
<label class="form-check-label" for="dropdownCheck2">
Remember me
</label>
</div>
</div>
<button type="submit" class="btn btn-primary">Sign in</button>
</form>
</div>