Bootstrap 4 button CSS classes

Posted by Editorial Staff | Updated on

Below are the list of Bootstrap 4 button CSS classes with the descriptions.

Button Class Description
.btn Adds basic styling to any button
.btn-block Makes a block-level button (spans the full width of the parent element)
.btn-danger Indicates a dangerous or potentially negative action
.btn-dark Dark grey button
.btn-default Indicates a default/standard button
.btn-info Contextual button for informational alert messages
.btn-lg Makes a large button
.btn-light Light grey button
.btn-link Makes a button look like a link (will still have button behavior)
.btn-outline-* Creates an outlined/bordered button. Use any of the contextual classes as * (btn-outline-primary, btn-outline-success, etc)
.btn-primary Provides extra visual weight and identifies the primary action in a set of buttons
.btn-sm Makes a small button
.btn-success Indicates a successful or positive action
.btn-secondary Indicates a “less” important action
.btn-toolbar Combine sets of button groups into button toolbars for more complex components
.btn-warning Indicates caution should be taken with this action
.active Makes the button appear pressed
.disabled Makes the button disabled

Bootstrap 4 Buttons Example

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