Bootstrap - Buttons


In this tutorial we will learn to style buttons in Bootstrap.

Button class

We can use the .btn class on an <a>, <button> and <input> elements.

<a class="btn btn-default" href="#" role="button">Link Button</a>
<button class="btn btn-default" type="submit">Button</button>
<input class="btn btn-default" type="button" value="Input Button">
<input class="btn btn-default" type="submit" value="Submit Button">


Styling buttons

We can use the following classes to type buttons.

Use the classes to provide visual aid to the user.

.btn-defaultThis will create a default button.
.btn-primaryThis will create a primary action button.
.btn-successThis will create a button to show success or positive action.
.btn-alertThis will create an alert button.
.btn-warningThis will create a warning button to indicate caution or warning.
.btn-dangerThis will create a danger button to indicate potential danger.
.btn-linkThis will make a button look like a link and de-emphasize it.
<!-- default button -->
<button type="button" class="btn btn-default">Default</button>

<!-- primary action button -->
<button type="button" class="btn btn-primary">Primary</button>

<!-- button to indicate success or positive result -->
<button type="button" class="btn btn-success">Success</button>

<!-- button for alert messages -->
<button type="button" class="btn btn-info">Info</button>

<!-- button to indicate caution or warning -->
<button type="button" class="btn btn-warning">Warning</button>

<!-- button to indicate potential danger -->
<button type="button" class="btn btn-danger">Danger</button>

<!-- make a button look like a link and de-emphasize it -->
<button type="button" class="btn btn-link">Link</button>


Button size

We can change the size of a button by using the following classes.

.btn-lgThis will make a large button.
.btn-smThis will make a small button.
.btn-xsThis will make an extra small button.
  <button type="button" class="btn btn-primary btn-lg">Large button</button>
  <button type="button" class="btn btn-default btn-lg">Large button</button>
  <button type="button" class="btn btn-primary">Default button</button>
  <button type="button" class="btn btn-default">Default button</button>
  <button type="button" class="btn btn-primary btn-sm">Small button</button>
  <button type="button" class="btn btn-default btn-sm">Small button</button>
  <button type="button" class="btn btn-primary btn-xs">Extra small button</button>
  <button type="button" class="btn btn-default btn-xs">Extra small button</button>


Block button

To create a button that span the full width of a parent we use the .btn-block class.

<button type="button" class="btn btn-default btn-lg btn-block">Block level button</button>


Active state

If we add the .active class to a button then it will look pressed.

<button type="button" class="btn btn-default btn-lg active">Button</button>
<a href="#" class="btn btn-default btn-lg active" role="button">Link</a>


Disabled state

If we add the .disabled class to a link then it will look unclickable. And if we add the disabled attribute to a button then it will also become unclickable.

<button type="button" class="btn btn-default btn-lg" disabled="disabled">Button</button>
<a href="#" class="btn btn-default btn-lg disabled" role="button">Link</a>