:: LUNO :: Dropdown

Dropdowns for more bootstrao components Bootstrap Dropdowns documentation

Overview

Dropdowns are toggleable, contextual overlays for displaying lists of links and more. They’re made interactive with the included Bootstrap dropdown JavaScript plugin. They’re toggled by clicking, not by hovering; this is an intentional design decision.

Dropdowns are built on a third party library, Popper.js, which provides dynamic positioning and viewport detection. Be sure to include popper.min.js before Bootstrap’s JavaScript or use bootstrap.bundle.min.js / bootstrap.bundle.js which contains Popper.js. Popper.js isn’t used to position dropdowns in navbars though as dynamic positioning isn’t required.

Single button

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:

<!-- dropdown: primary -->
<div class="dropdown">
    <button class="btn btn-primary dropdown-toggle" type="button" id="dropdownMenuButton" 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>

<!-- dropdown: outline primary -->
<div class="dropdown">
    <button class="btn btn-outline-primary dropdown-toggle" type="button" id="dropdownMenuButton" data-bs-toggle="dropdown" aria-expanded="false">
        Primary Outline 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>

<!-- dropdown: dark -->
<div class="dropdown">
    <button class="btn btn-dark dropdown-toggle" type="button" id="dropdownMenuButton2" data-bs-toggle="dropdown" aria-expanded="false">
        Dark Dropdown
    </button>
    <ul class="dropdown-menu dropdown-menu-dark shadow p-3">
        <li><a class="dropdown-item py-2 rounded active" 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>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item py-2 rounded" href="#">Separated link</a></li>
    </ul>
</div>

And with <a> elements:

<!-- dropdown: primary -->
<div class="dropdown">
    <a class="btn btn-primary dropdown-toggle" href="#" role="button" id="dropdownMenuLink" data-bs-toggle="dropdown" aria-expanded="false">
        Primary Dropdown
    </a>
    <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
    </ul>
</div>

<!-- dropdown: outline primary -->
<div class="dropdown">
    <a class="btn btn-outline-primary dropdown-toggle" href="#" role="button" id="dropdownMenuLink" data-bs-toggle="dropdown" aria-expanded="false">
        Primary Outline Dropdown
    </a>
    <ul class="dropdown-menu" aria-labelledby="dropdownMenuButton">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
    </ul>
</div>

<!-- dropdown: dark -->
<div class="dropdown">
    <a class="btn btn-dark dropdown-toggle" href="#" role="button" id="dropdownMenuLink" data-bs-toggle="dropdown" aria-expanded="false">
        Dark Dropdown
    </a>
    <ul class="dropdown-menu dropdown-menu-dark" aria-labelledby="dropdownMenuButton2">
        <li><a class="dropdown-item active" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Separated link</a></li>
    </ul>
</div>

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

<div class="btn-group">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Primary</button>
    <ul class="dropdown-menu border-0 shadow bg-primary">
        <li><a class="dropdown-item text-light" href="#">Action</a></li>
        <li><a class="dropdown-item text-light" href="#">Another action</a></li>
        <li><a class="dropdown-item text-light" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item text-light" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group">
    <button type="button" class="btn btn-secondary dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Secondary</button>
    <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group">
    <button type="button" class="btn btn-success dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Success</button>
    <ul class="dropdown-menu border-0 shadow bg-success">
        <li><a class="dropdown-item text-light" href="#">Action</a></li>
        <li><a class="dropdown-item text-light" href="#">Another action</a></li>
        <li><a class="dropdown-item text-light" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item text-light" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group">
    <button type="button" class="btn btn-info dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Info</button>
    <ul class="dropdown-menu border-0 shadow bg-info">
        <li><a class="dropdown-item text-light" href="#">Action</a></li>
        <li><a class="dropdown-item text-light" href="#">Another action</a></li>
        <li><a class="dropdown-item text-light" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item text-light" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group">
    <button type="button" class="btn btn-warning dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Warning</button>
    <ul class="dropdown-menu border-0 shadow bg-warning">
        <li><a class="dropdown-item text-light" href="#">Action</a></li>
        <li><a class="dropdown-item text-light" href="#">Another action</a></li>
        <li><a class="dropdown-item text-light" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item text-light" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group">
    <button type="button" class="btn btn-danger dropdown-toggle" data-bs-toggle="dropdown" aria-expanded="false">Danger</button>
    <ul class="dropdown-menu border-0 shadow bg-danger">
        <li><a class="dropdown-item text-light" href="#">Action</a></li>
        <li><a class="dropdown-item text-light" href="#">Another action</a></li>
        <li><a class="dropdown-item text-light" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item text-light" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->

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.

<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-bs-toggle="dropdown" aria-expanded="false">
        <span class="visually-hidden">Toggle Dropdown</span>
    </button>
    <ul class="dropdown-menu border-0 shadow py-3 px-2">
        <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>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item py-2 rounded" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->

Sizing

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

<div class="btn-group">
    <button class="btn btn-secondary btn-lg dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false">
        Large button
    </button>
    <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group ms-2">
    <button type="button" class="btn btn-lg btn-secondary">Large split button</button>
    <button type="button" class="btn btn-lg btn-secondary dropdown-toggle dropdown-toggle-split" data-bs-toggle="dropdown" aria-expanded="false">
        <span class="visually-hidden">Toggle Dropdown</span>
    </button>
    <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group">
    <button class="btn btn-secondary btn-sm dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false">
        Small button
    </button>
    <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->
<div class="btn-group ms-2">
    <button type="button" class="btn btn-sm btn-secondary">Small split button</button>
    <button type="button" class="btn btn-sm btn-secondary dropdown-toggle dropdown-toggle-split" data-bs-toggle="dropdown" aria-expanded="false">
        <span class="visually-hidden">Toggle Dropdown</span>
    </button>
    <ul class="dropdown-menu">
        <li><a class="dropdown-item" href="#">Action</a></li>
        <li><a class="dropdown-item" href="#">Another action</a></li>
        <li><a class="dropdown-item" href="#">Something else here</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Separated link</a></li>
    </ul>
</div><!-- /btn-group -->

Text

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="dropdownMenuButton" data-bs-toggle="dropdown" aria-expanded="false">
        Dropdown button
    </button>
    <div class="dropdown-menu p-4 text-muted border-0 shadow" style="max-width: 200px;">
        <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

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.

<!-- dropdown-menu-->
<div class="dropdown">
    <button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-bs-toggle="dropdown" aria-expanded="false">
        Login Forms Dropdown
    </button>
    <div class="dropdown-menu p-3 text-muted border-0 shadow" style="width: 320px;">
        <form class="px-2 py-2">
            <div class="mb-3">
                <label for="exampleDropdownFormEmail1" class="form-label">Email address</label>
                <input type="email" class="form-control" id="exampleDropdownFormEmail1" placeholder="email@example.com">
            </div>
            <div class="mb-3">
                <label for="exampleDropdownFormPassword1" class="form-label">Password</label>
                <input type="password" class="form-control" id="exampleDropdownFormPassword1" placeholder="Password">
            </div>
            <div class="mb-3">
                <div class="form-check">
                    <input type="checkbox" class="form-check-input" id="dropdownCheck">
                    <label class="form-check-label" for="dropdownCheck">Remember me</label>
                </div>
            </div>
            <button type="submit" class="btn btn-primary">Sign in</button>
        </form>
        <div class="dropdown-divider"></div>
        <a class="dropdown-item" href="#">New around here? Sign up</a>
        <a class="dropdown-item" href="#">Forgot password?</a>
    </div>
</div>

Bootstrap collapse Bootstrap listgroup

LUNO

Overview

Single button

Split button

Sizing

Text

Forms

Theme Setting

Light/Dark & Contrast Layout

Google Font Settings

More Setting