Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

HTML

<div class="tpl" data-favorite="1">
    <div>
        <span class="favorite">★</span>
        <span class="text">Italian Pizza: salmon, olives, onion, tomato, blue-cheese</span>
    </div>
</div>

CSS

[data-favorite=1] { background: #AAA; border-left: 3px solid green  }
.favorite { font-size: 2em; padding: 0 1 0 1em;}
[data-favorite=1] .favorite { color:yellow; }
[data-favorite=0] .favorite { color:#AAA; }

JavaScript

// as data-favorite="1", the star should appears in YELLOW, and the parent div should get a GREEN left border/

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JSFiddle - React, Tailwind, and code Playground

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