Default buttons

<button class="btn">Default</button>
<button class="btn btn-white">Default white</button>
<button class="btn btn-ok">Ok</button>
<button class="btn btn-info">Info</button>
<button class="btn btn-warning">Warning</button>
<button class="btn btn-error">Error</button>

Styled buttons 1

<button class="btn btn-ok-1">Ok</button>
<button class="btn btn-info-1">Info</button>
<button class="btn btn-warning-1">Warning</button>
<button class="btn btn-error-1">Error</button>

Styled buttons 2

<button class="btn btn-ok-2">Ok</button>
<button class="btn btn-info-2">Info</button>
<button class="btn btn-warning-2">Warning</button>
<button class="btn btn-error-2">Error</button>

Action buttons

<button class="btn btn-reload">Reload</button>
<button class="btn btn-download">Download</button>
<button class="btn btn-add">Add</button>
<button class="btn btn-remove">Remove</button>
<button class="btn btn-cancel">Cancel</button>
<button class="btn btn-delete">Delete</button>
<button class="btn btn-power">Power</button>
<button class="btn btn-search">Search</button>
<button class="btn btn-basket">Basket</button>
<button class="btn btn-password">Password</button>
<button class="btn btn-options">Options</button>
<button class="btn btn-favorite">Favorite</button>
<button class="btn btn-logoff">Log off</button>
<button class="btn btn-volume">Volume</button>
<button class="btn btn-mute">Mute</button>
<button class="btn btn-attach">Attach</button>

Browser buttons

<button class="btn btn-chrome">Chrome</button>
<button class="btn btn-firefox">Firefox</button>
<button class="btn btn-ie">Internet Explorer</button>
<button class="btn btn-safari">Safari</button>
<button class="btn btn-opera">Opera</button>

OS buttons

<button class="btn btn-windows">Windows</button>
<button class="btn btn-apple">Apple</button>

Social buttons

<button class="btn btn-facebook">Facebook</button>
<button class="btn btn-twitter">Twitter</button>
<button class="btn btn-google">Google Plus</button>
<button class="btn btn-github">Github</button>

Available sizes

<button class="btn btn-xsmall">Xsmall</button>
<button class="btn btn-small">Small</button>
<button class="btn">Default</button>
<button class="btn btn-large">Large</button>
<button class="btn btn-xlarge">Xlarge</button>