nput type="text" class="form-control" placeholder="..." name="keyword1">
            </div>
        </div>

        <div class="form-group row">
            <label class="col-sm-2 col-form-label">关键字2</label>
            <div class="col-sm-8">
                <input type="text" class="form-control" placeholder="..." name="keyword2">
            </div>
        </div>

        <div class="form-group row">
            <label class="col-sm-2 col-form-label">关键字3</label>
            <div class="col-s