css flex布局 justify-content: space-between 最后两张居左

比如如果是8张，最后两张两边对齐，第八张最后一张 放个占位符就OK了

<div class="previewPadding flex" >

<div class="picList picList3" v-for="(item,index) in picDataList" :key="index">

<img class="pic" :src="item.pic" />

</div>

<div v-if="picDataList.length == 8" class="picList picList3" ></div>

</div>

.flex{

display: flex;

justify-content: space-between;

flex-wrap: wrap;

.picList{

width:49%;

}

.picList3{

width:32%;

//margin-right: 3%;

}

}