JSFiddle - React, Tailwind, and code Playground

by webozine

HTML

<nav>navigation</nav>

CSS

nav {
    width: calc(100% - 150px);
    background: red;
}

JavaScript

var s = document.styleSheets[1],
    rules = s.cssRules,
    selector = [],
    i = 0,
    l = rules.length

for (; i < l; i++) {
    if (rules[i].style['width'].indexOf('calc') > -1) {
        selector.push(rules[i].selectorText)
    }
}

$( selector.join() ).hide();