x flex-wrap">
                <div class="form-group flex-fill mr-2">
                    <label class="form-label">从格式 <span class="text-danger">*</span></label>
                    <div class="form-control-wrap">
                        <select class="form-control" v-model="input.from">
                            <option value="">请选择</option>
                            <option v-for="value in convert_from" :value="value">{{value}}</option>
                        </select>
          