fix(code): 修正代码错误及不严谨的地方

pages_promotion/fenxiao/goods_list.vue

@@ -12,6 +12,7 @@
 							<view
 								class="quick-nav-item"
 								v-for="item in categoryList"
+								:key="item.category_id"
 								:class="{ selected: categoryId == item.category_id }"
 								@click="changeCategory(item.category_id)"
 							>
@@ -140,7 +141,7 @@ export default {
 };
 </script>
 
-<style>
+<style lang="scss">
 .quick-nav >>> .uni-scroll-view-content {
 	display: flex;
 }