It is not possible to do this only with HTML - (as the name suggests).
, , JavaScript, - autofocus="autofocus" :
<button type="button" class="btn btn-default" autofocus="autofocus">Left</button>
, . , .
, .btn-default.active .btn-default:focus:
.btn-default:focus, .btn-default.active {
color: #333;
background-color: #ebebeb;
border-color: #adadad;
}
, . , JavaScript. , active , . , .
, Bootstrap JS. , Bootstrap JS/jQuery .
<div class="btn-group" data-toggle="buttons">
<label class="btn btn-primary active">
<input type="radio" name="options" id="option1"> Option 1
</label>
<label class="btn btn-primary">
<input type="radio" name="options" id="option2"> Option 2
</label>
<label class="btn btn-primary">
<input type="radio" name="options" id="option3"> Option 3
</label>
</div>