SOURCE

<!-- form-horizontal 水平表单 -->
<form class="form-horizontal" role="form">
  <div class="form-group">
    <label for="firstname" class="col-sm-2 control-label">名字</label>
    <div class="col-sm-10">
      <input type="text" class="form-control" id="firstname" placeholder="请输入名字">
    </div>
  </div>
  <div class="form-group">
    <label for="lastname" class="col-sm-2 control-label">姓</label>
    <div class="col-sm-10">
      <input type="text" class="form-control" id="lastname" placeholder="请输入姓">
    </div>
  </div>
  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
      <div class="checkbox">
        <label>
          <input type="checkbox">请记住我
        </label>
      </div>
    </div>
  </div>
  <div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
      <button type="submit" class="btn btn-default">登录</button>
    </div>
  </div>
</form>