JSFiddle - React, Tailwind, and code Playground

JavaScript

var resolveAppliedStyle = (function () {
    var documentElement = document.documentElement,
            matchesSelector =
            documentElement.matchesSelector ||
            documentElement.mozMatchesSelector ||
            documentElement.webkitMatchesSelector ||
            documentElement.msMatchesSelector ||
            documentElement.oMatchesSelector;
 
    if (!matchesSelector) {
        if (document.querySelectorAll) {
            matchesSelector = function (selector) {
                var matchingElements = this.parentNode.querySelectorAll(selector),
                        count = matchingElements.length;
 
                for (var i = 0; i < count; ++i) {
                    if (matchingElements[i] === this) {
                        return true;
                    }
                }
                return false;
            };
        }
        else {
            throw new Error("no browser support for selector matching");
        }
    }
 
    function styleImportanceByRule(rule, styleProperty) {
        if (rule.style.getPropertyPriority) {
            return rule.style.getPropertyPriority(styleProperty) === "important" ? 100000 : 0;
        }
        else {
            return 0;
        }
 
    }
 
    function styleImportanceByStyleText(styleText) {
        return styleText.match(/\s!important/gi) ? 100000 : 0;
    }
 
    function resolveAppliedStyle(element, style) {
 
        var styleSheets = document.styleSheets,
                numberOfStyleSheets = styleSheets.length,
                styleSheet,
                styleSheetIndex,
                rule,
                rules,
                numberOfRules,
                ruleIndex,
                appliedRule,
                scoredStyles = [],
                inlineStyle,
                potentiallyAppliedStyle,
                cssStyleSpecificityScore,
                styleSpecificity,
                matchesSelectorResult;
 
        for (styleSheetIndex = 0; styleSheetIndex <...