JSFiddle - React, Tailwind, and code Playground

HTML

<div class="content main">I want this div</div>
<div class="content">I don't care about this one</div>
<div class="main">I don't want this</div>

CSS

.content[class~="main"] {
    background:red;
}
.main[class~="content"] {
    color:yellow;
}