<button type="button" class="btn btn-primary">Primary</button>
<button type="button" class="btn btn-secondary">Secondary</button>
<button type="button" class="btn btn-success">Success</button>
<button type="button" class="btn btn-danger">Danger</button>
<button type="button" class="btn btn-warning">Warning</button>
<button type="button" class="btn btn-info">Info</button>
<button type="button" class="btn btn-light">Light</button>
<button type="button" class="btn btn-dark">Dark</button>

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

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

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

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

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

<!-- or -->

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

<button type="button" class="btn btn-outline-secondary btn-uppercase">
  <i class="ti-plus mr-2"></i> Create User
</button>
<button type="button" class="btn btn-success btn-uppercase">
  <i class="ti-check-box mr-2"></i> Save
</button>
<button type="button" class="btn btn-outline-warning btn-rounded btn-uppercase">
  <i class="ti-settings mr-2"></i> Settings
</button>
<button type="button" class="btn btn-danger btn-square btn-uppercase">
  <i class="ti-trash mr-2"></i> Delete
</button>

<button type="button" class="btn btn-outline-secondary">
  <i class="ti-plus"></i>
</button>
<button type="button" class="btn btn-success">
  <i class="ti-check-box"></i>
</button>
<button type="button" class="btn btn-warning btn-rounded">
  <i class="ti-settings"></i>
</button>
<button type="button" class="btn btn-danger btn-square">
  <i class="ti-trash"></i>
</button>

<button type="button" class="btn btn-secondary btn-floating">
  <i class="ti-plus"></i>
</button>

<button type="button" class="btn btn-primary" disabled>
  <span class="spinner-border spinner-border-sm mr-2" role="status" aria-hidden="true"></span>
  Loading...
</button>

<button type="button" class="btn btn-primary btn-pulse">
  <i class="ti-user mr-2"></i> Profile
</button>

<a href="#" class="btn btn-apple">
  <i class="fa fa-apple"></i>
  <span>
    <span>Download on the</span>
    <span>App Store</span>
  </span>
</a>

<a href="#" class="btn btn-google-play">
  <img src="google_play_button.png" alt="image">
  <span>
     <span>Get in on</span>
     <span>Google Play</span>
   </span>
</a>

<button type="button" class="btn btn-facebook">
  <i class="fa fa-facebook-square mr-2"></i> Facebook
</button>
<button type="button" class="btn btn-google">
  <i class="fa fa-google mr-2"></i> Google
</button>
<button type="button" class="btn btn-twitter">
  <i class="fa fa-twitter mr-2"></i> Twitter
</button>
<button type="button" class="btn btn-linkedin">
  <i class="fa fa-linkedin mr-2"></i> Linkedin
</button>
...

<button type="button" class="btn btn-secondary btn-sm">Button</button>
<button type="button" class="btn btn-secondary">Button</button>
<button type="button" class="btn btn-secondary btn-lg">Button</button>

<div class="btn-group" role="group" aria-label="Basic example">
  <button type="button" class="btn btn-dark">Left</button>
  <button type="button" class="btn btn-dark">Middle</button>
  <button type="button" class="btn btn-dark">Right</button>
</div>

<div class="btn-group" role="group" aria-label="Basic example">
  <button type="button" class="btn btn-primary">
    <i class="ti-control-pause"></i>
  </button>
  <button type="button" class="btn btn-success">
    <i class="ti-control-play"></i>
  </button>
  <button type="button" class="btn btn-warning">
    <i class="ti-control-forward"></i>
  </button>
</div>

<div class="btn-toolbar" role="toolbar" aria-label="Toolbar with button groups">
  <div class="btn-group mr-2" role="group" aria-label="First group">
    <button type="button" class="btn btn-dark">1</button>
    <button type="button" class="btn btn-dark">2</button>
    <button type="button" class="btn btn-dark">3</button>
    <button type="button" class="btn btn-dark">4</button>
  </div>
  <div class="btn-group mr-2" role="group" aria-label="Second group">
    <button type="button" class="btn btn-dark">5</button>
    <button type="button" class="btn btn-dark">6</button>
    <button type="button" class="btn btn-dark">7</button>
  </div>
  <div class="btn-group" role="group" aria-label="Third group">
    <button type="button" class="btn btn-dark">8</button>
  </div>
</div>

<div class="btn-group btn-group-lg" role="group" aria-label="Large button group">
  <button type="button" class="btn btn-dark">Left</button>
  <button type="button" class="btn btn-dark">Middle</button>
  <button type="button" class="btn btn-dark">Right</button>
</div>

<div class="btn-group" role="group" aria-label="Default button group">
  <button type="button" class="btn btn-dark">Left</button>
  <button type="button" class="btn btn-dark">Middle</button>
  <button type="button" class="btn btn-dark">Right</button>
</div>

<div class="btn-group btn-group-sm" role="group" aria-label="Small button group">
  <button type="button" class="btn btn-dark">Left</button>
  <button type="button" class="btn btn-dark">Middle</button>
  <button type="button" class="btn btn-dark">Right</button>
</div>

<div class="btn-group" role="group" aria-label="Button group with nested dropdown">
  <button type="button" class="btn btn-dark">1</button>
  <button type="button" class="btn btn-dark">2</button>

  <div class="btn-group" role="group">
    <button id="btnGroupDrop1" type="button" class="btn btn-dark dropdown-toggle"
            data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
      Dropdown
    </button>
    <div class="dropdown-menu" aria-labelledby="btnGroupDrop1">
      <a class="dropdown-item" href="#">Dropdown link</a>
      <a class="dropdown-item" href="#">Dropdown link</a>
    </div>
  </div>
</div>

<div class="btn-group-vertical" role="group" aria-label="Vertical button group">
  <button type="button" class="btn btn-primary">
    <i class="fa fa-cloud-upload"></i>
  </button>
  <button type="button" class="btn btn-primary">
    <i class="fa fa-calendar"></i>
  </button>
  <button type="button" class="btn btn-primary">
    <i class="fa fa-database"></i>
  </button>
  <button type="button" class="btn btn-primary">
    <i class="fa fa-cog"></i>
  </button>
  <button type="button" class="btn btn-primary">
    <i class="fa fa-heart-o"></i>
  </button>
  <button type="button" class="btn btn-primary">
    <i class="fa fa-share"></i>
  </button>
</div>