active Pressed button
btn Highly recommend using the <button> element whenever possible to ensure matching cross-browser rendering.
btn-block Create block level buttons—those that span the full width of a parent
btn-danger
btn-default
btn-info
btn-lg Button sizing
btn-link Deemphasize a button by making it look like a link while maintaining button behavior
btn-primary
btn-sm Button sizing
btn-success
btn-warning
btn-xs Button sizing
carousel-control <a class="left carousel-control" href="#example" role="button" data-slide="prev">\n  <span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span>\n  <span class="sr-only">Previous</span>\n</a>\n
checkbox
checkbox-inline
control-label <div class="form-group">\n  <label class="control-label" for="myInput">Input with success</label>\n  <input type="text" class="form-control" id="myInput">\n</div>\n
disabled Disabled state.\n\nFor <a>  Opera <18, IE11 use JS to disable such link.\n
dropdown-toggle
fieldset
label
label-danger
label-default
label-info
label-primary
label-success
label-warning
left See .carousel-control\n <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">\n
radio
radio-inline
right See .carousel-control\n <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">\n
sr-only Screen readers will have trouble with your forms if you don't include a label for every input.\nFor these inline forms, you can hide the labels using the .sr-only class. \n  <div class="form-group">\n    <label class="sr-only" for="pwf">Password</label>\n    <input type="password" class="form-control" id="pwd" placeholder="Password">\n  </div>\n