<style>
div{background-color: #000; opacity: 0.5;}
span{opacity: 1;}
</style>
<div>
<span>hello,world.</span>
</div>将opacity放在background-color中设置可解决此问题:
<style>
div{background-color: rgb(0, 0, 0, 0.5);}
</style>
<div>
<span>hello,world.</span>
</div>相关链接
[1].CSS的opacity设置背景透明字体不透明:https://blog.csdn.net/qq_52070860/article/details/124374739
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