优化提交页面样式，优化商品默认为第一个热词进行搜索，修复分销商铺bug

uni.scss

@@ -147,6 +147,9 @@ $font-weight: 400;
 	justify-content: center;
 	flex-direction: column;
 }
+.flex-a-c{
+	align-items: center;
+}
 .relative {
 	position: relative;
 }