JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML>
<html>
<head>
	<meta http-equiv="content-type" content="text/html" />
	<meta name="author" content="HUSSEN AL SHATRI" />
<script src="http://code.jquery.com/jquery-1.7.1.min.js"></script>
    <script>
    $(document).ready(function(){
        
        $('.bg').change(function(){
         localStorage.bg=$('.bg').val();
        $('body').css('background',localStorage.bg);
        
        });
       
         if(localStorage.bg == 0){$('body').css('background','white');}else{
            $('body').css('background',localStorage.bg);
        }
     
    });
    </script>
	<title>Untitled 1</title>
</head>

<body>

<select class="bg">
    <option value="black">Black</option>
    <option value="blue">Blue</option>
    <option value="green">Green</option>
</select>

</body>
</html>