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Dropdowns Toggle contextual overlays for displaying lists of links and more with the Bootstrap dropdown plugin.
Basic 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.
Find more facts and uses at the bootstrap official documentation.
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.
Find more facts and uses at the bootstrap official documentation.
Kitchen Sink example
A composition of all working elements
Links & buttons
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 <a>or <button>elements to better fit your potential needs.
Button
Link
Dropdown buttons
Variations
Split button
Multilevel dropdown
Add multilevel menu by wrapping the child node selectors with
.dropdown-multilevel, change direction of by adding .dropdown-multilevel-left(right by default)
Content types
Sizing dropdowns
Button dropdowns work with buttons of all sizes, including default and split dropdown buttons
No arrow
Remove directional arrow from dropdown button by adding
.no-arrowto .dropdown-toggle
Animated dropdowns
Add animations to dropdowns by adding
.dropdown-menu-animated, .fadeup, .fadedown, .faderight, .fadeleftto .dropdown-menu
Directional Arrows
Trigger dropdown menus above elements by adding
.dropup, .dropright, and .dropleftto the parent element.
Dropup
Dropright
Dropleft
Container examples
You can add any content to dropdown containers and change its width by adding the class
.dropdown-sm, .dropdown-md, .dropdown-lg, and .dropdown-xl
Headers examples
Customize
.dropdown-headerusing utility classes. Change backgrounds, colors, and paddings using various helpers
Dr. Codex Lantern
drlantern@dedemao.com
Dr. Codex Lantern
drlantern@dedemao.com
Dr. Codex Lantern
drlantern@dedemao.com
Menu alignment
By default, a dropdown menu is automatically positioned 100% from the top and along the left side of its parent. Add
.dropdown-menu-rightto a .dropdown-menuto right align the dropdown menu.
Responsive alignment
If you want to use responsive alignment, disable dynamic positioning by adding the
data-display="static"attribute and use the responsive variation classes. To align left/right the dropdown menu with the given breakpoint or larger, add .dropdown-menu{-sm|-md|-lg|-xl}-rightor .dropdown-menu{-sm|-md|-lg|-xl}-left