接别人的锅，遇到个很有意思的层级问题，代码结构是这样的：
<div class="container">
<div class="box1">查看</div>
<div class="box2">
<button>查看图片</button>
<div class="img-wrap">
<img src="./umr.jpg" alt="" />
</div>
</div>
<div class="box3">
<audio controls src=""></audio>
</div>
</div>
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