update：BOM清单展开加背景色

src/views/modules/tech/product-management.vue

@@ -757,6 +757,8 @@ export default {
   }
 </script>
 
-<style scoped>
-
+<style scoped lang="scss">
+/deep/ .product-management  .el-table__row--level-1{
+  background-color: #c1c9d244;
+}
 </style>