JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrap">
        <div class="sloi1">слой1</div>
        <div class="sloi2">слой2</div>
    </div>

CSS

.wrap{
background:orange;
border:1px solid #47553d;
width:400px;
height:500px;
}


.sloi1{
height:200px;
background:#ccc;
border:1px solid #222;
}

.sloi1:hover~.sloi2{
background:orange;
}

.sloi2{
height:300px;
background:#999;
border:1px solid #222;
}