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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                當對多個元素同時設置定位時,定位元素之間有可能會發生重疊。 ![](https://img.kancloud.cn/dd/03/dd036a26113b6196b88aa1fbd70dae34_326x326.png) 在CSS中,要想調整重疊定位元素的堆疊順序,可以對定位元素應用z-index層疊等級屬性,其取值可為正整數、負整數和0。比如: ```css z-index: 2; font-weight: 700 ``` 注意: 1. z-index的默認屬性值是0,取值越大,定位元素在層疊元素中越居上 2. 如果取值相同,則根據書寫順序,后來居上。 3. 后面數字一定不能加單位。 4. 只有相對定位,絕對定位,固定定位有此屬性,其余標準流,浮動,靜態定位都無此屬性,亦不可指定此屬性。
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