bootstrap 3列表单布局

 <form class="form-horizontal" role="form">
            <fieldset>
                <legend>基础信息</legend>
                <div class="col-md-4">
                    <div class="form-group">
                        <label class="col-sm-3 control-label">标准类别</label>
                        <div class="col-sm-9">
                            <select class="form-control" style="width:60%" autocomplete="off" id="cdd_filetype">
                                <option value="0" selected="selected">食品加工产品</option>
                            </select>
                        </div>
                    </div>
                    <div class="form-group">
                        <label class="col-sm-3 control-label">名称</label>
                        <div class="col-sm-9">
                            <input class="form-control" style="width:60%" id="username" type="text" placeholder="" />
                        </div>
                    </div>
                </div>
                <div class="col-md-4">
                    <div class="form-group">
                        <label class="col-sm-3 control-label">标准编号</label>
                        <div class="col-sm-9">
                            <input type="text" id="cdd_filename" name="FileName" style="width:60%" value="GB 9681-88" placeholder="标准编号" class="form-control" required="" />
                        </div>
                    </div>
                    <div class="form-group">
                        <label class="col-sm-3 control-label">别名</label>
                        <div class="col-sm-9">
                            <input class="form-control" style="width:60%" id="biename" type="text" placeholder="" />
                        </div>
                    </div>
                </div>
                <div class="col-md-4">
                    <div class="form-group">
                        <label class="col-sm-3 control-label">过期时间</label>
                        <div class="col-sm-9">
                            <input type="text" class="layui-input" id="test1" style="width:auto" placeholder="yyyy-MM-dd">
                        </div>
                    </div>
                </div>
            </fieldset>
</form>