fix : 上传文件表格滚动时, 表头固定

src/components/SearchFilesByTag.vue

@@ -21,7 +21,7 @@
       </el-form-item>
     </el-form>
     <el-card style="width: 100%">
-      <fvTable style="width: 100%;max-height: 250px" v-if="showTable" :tableConfig="tableConfig"
+      <fvTable style="width: 100%;max-height: 250px" v-if="showTable" height="250"  :tableConfig="tableConfig"
                :data="fileList" :isSettingCol="false" :pagination="false">
         <template #empty>
           <el-empty :image-size="90" description="暂无数据" style="padding: 0"/>
@@ -66,7 +66,6 @@ const tableConfig = reactive({
       prop: 'originalFileName',
       label: '附件名称',
       align: 'center',
-      fixed:true
     },
     {
       prop: 'tag',