Count CSS Rules in Console July 11th, 2013

In your console, type…

    
        var sheets = document.styleSheets;
        var rules = 0;
        for(i=0; i < sheets.length; i++){
            if(sheets[i].cssRules !== null){
                rules = rules + sheets[i].cssRules.length;
            }
        }
        console.log('Rules = '+rules);
    

IE limits rules to 4,095.