Primary Button
<button class="btn btn-primary">Primary Action</button>
Secondary Button
<button class="btn btn-secondary">Secondary Action</button>
Success Button
<button class="btn btn-success">Confirm</button>
Danger Button
<button class="btn btn-danger">Delete</button>
Disabled Button
<button class="btn btn-primary" disabled>Disabled</button>
Button Sizes
<button class="btn btn-primary btn-sm">Small</button>
<button class="btn btn-primary">Normal</button>
<button class="btn btn-primary btn-lg">Large</button>