view中的文字默认垂直偏上是为什么

问题&＃xff1a;设置-和&＃43;水平和垂直居中&＃xff0c;可以设置.num_edit属性&＃xff1a;display: flex; justify_content: center; align-items: center;。请问&＃xff1a;为啥不设置align-items: center属性的时候&＃xff0c;要略微偏上一点

<view class&＃61;"cart_info_wrap"><view class&＃61;"goods_name">TCL电视 49P3dfdf辅导费地方大幅度发辅导辅导辅导dfee发送到发的付首付的view><view class&＃61;"goods_price_row"><view class&＃61;"goods_price">&＃xffe5;999view><view class&＃61;"cart_num_tool"><view class&＃61;"num_edit">-view><view class&＃61;"goods_num">1view><view class&＃61;"num_edit">&＃43;view>view>view>view>


.cart_info_wrap {flex: 4;.goods_name {display: -webkit-box;overflow: hidden;-webkit-box-orient: vertical;-webkit-line-clamp: 2;color: #666;}.goods_price_row {display: flex;justify-content: space-between;.goods_price {color: var(--themeColor);font-size: 34rpx;}.cart_num_tool {display: flex;justify-content: center;align-items: center;.num_edit {display: flex;width: 55rpx;height: 55rpx;border: 1px solid #ccc;}.goods_num {}}}}