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// 通过scss的mixin功能，把原来需要写4行的css，变成一行
// 目的是保持代码干净整洁，不至于在nvue下，到处都要写display:flex的条件编译
@mixin flex($direction: row) {
/* #ifndef APP-NVUE */
display: flex;
/* #endif */
flex-direction: $direction;
}