css粘性定位超出指定宽度失效问题

展示效果

解决办法：外层容器添加display:grid即可

完整代码

<template><div class="box"><div class="line" v-for="items in 10"><div class="item" v-for="item in 8">drgg</div></div></div>
</template>
<style scoped lang="scss">.box{width: 400px;height: 200px;overflow: auto;display: grid;}.line {display: flex;}.item{width: 100px;border: 1px solid;flex: none;&:first-child {position: sticky;left: 0;background-color: aliceblue;}}
</style>