Formulário com Bootstrap

Dois campos de formulário com BS3

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="container-fluid">
  <div class="row-fluid">

    <div class="row">
      <div class="col-lg-12">
        <h3 class="page-header">Meu Form</h3>
      </div>
    </div>  <!-- /row -->

    <div class="row">
      <div class="col-lg-12">
        <form id="cadastro" class="form_cad" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
          <div class="form-group">
            <label>Data Solicitação</label>
            <div class='input-group date' id='cal'>
              <input class="form-control form_input_recebe_foco col-lg-3" type="text" id="data_solicitacao" name="data_solicitacao" required autofocus maxlength="10" value="" placeholder="(Obrigatório)">
              <span class="input-group-addon">
                  <span class="glyphicon glyphicon-calendar"></span>
              </span>
            </div>
          </div>
        </form>
      </div>
    </div>  <!-- /row -->

    <div class="row">
      <div class="col-lg-12">
        <div class="form-group">
          <label for="qdade_horas">Quantidade Horas</label>
          <input class="form-control form_input_recebe_foco" type="text" id="qdade_horas_dec" name="qdade_horas" maxlength="5" required autocomplete="off" value="">
        </div>
      </div>
    </div>  <!-- /row -->

  </div>  <!-- row-fluid -->
</div>  <!-- container-fluid -->