Sticky 组件，我希望这部分不是透明，比如加个颜色挡住，怎么处理？

[Yiwei099]

<Sticky> <div class="tab-container"> <div class="tab-item" v-for="(item, index) in tabList()" :key="index" @click="onTabClick(index)" :class=" tabIndex == index ? tabListClassChoose[index] : tabListClassUnchoose[index] "> <div :class="tabIndex == index ? 'tab-item-name' : 'tab-item-name-choose'"> {{ item }} </div> <div class="tab-item-underline" v-if="tabIndex !== index"></div> </div> </div> </Sticky>