<link href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="row">
<div class="col-md-5 col-md-offset-4">
<form class="form-horizontal" role="form">
<fieldset>
<legend>Detalles del usuario</legend>
<div class="form-group">
<label class="col-sm-2 col-md-2 col-lg-2 control-label" for="textinput">Nombre</label>
<div class="col-sm-9 col-md-9 col-lg-9 ">
<input type="text" placeholder="Nombre" class="form-control">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 col-md-2 col-lg-2 control-label" for="textinput">Apellido</label>
<div class="col-sm-9 col-md-9 col-lg-9">
<input type="text" placeholder="Apellido" class="form-control">
</div>
</div>
<div class="form-group">
<label class="col-sm-2 col-md-2 col-lg-2 control-label" for="textinput">Numero de empleado</label>
<div class="col-sm-9 col-md-9 col-lg-9">
<input type="text" placeholder="No empleado" class="form-control">
</div>
</div>