bootstrap form-control inline
<div class="form-group">
<label for="birthday" class="col-xs-2 control-label">Birthday</label>
<div class="col-xs-10">
<div class="form-inline">
<div class="form-group">
<input type="text" class="form-control" placeholder="year"/>
</div>
<div class="form-group">
<input type="text" class="form-control" placeholder="month"/>
</div>
<div class="form-group">
<input type="text" class="form-control" placeholder="day"/>
</div>
</div>
</div>
</div>