JSFiddle - React, Tailwind, and code Playground

HTML

<div style="font-weight: 500">500 text</div>
<div style="font-weight: 700">700 text</div>

CSS

*[style~="font-weight:"][style~="500;"]
{
    color: red;
}
*[style~="font-weight:"][style~="700;"]
{
    color: green;
}