<!doctype html>
<html lang="en">
  <head>
    <title>SikhJS</title>

    <link href="css/style.css" rel="stylesheet"/>
    <link rel="icon" type="image/png" href="logo.png" />
    <link rel="manifest" href="manifest.webmanifest">

    <meta charset="utf-8"/>
    <meta id="meta" name="viewport" content="width=device-width, initial-scale=1.0" />
  </head>
  <body>
    <div id="root"></div>

    <script src="bundle.js" type="text/javascript"></script>
    <script src="service-worker.js" type="text/javascript"></script>
  </body>
</html>

<!doctype html>
<html lang="en">
  <head>
    <title>SikhJS</title>

    <link href="css/style.css" rel="stylesheet" />
    <link rel="icon" type="image/png" href="logo.png" />
    <link rel="manifest" href="manifest.webmanifest" />

    <meta charset="utf-8" >
    <meta id="meta" name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="theme-color" content="#00bcd4">
  </head>
  <body>
    <div id="root"></div>

    <script src="bundle.js" type="text/javascript"></script>
    <script src="service-worker.js" type="text/javascript"></script>
  </body>
</html>

Use theme-color for better mobile experience
Use theme-color for better mobile experience

Thanks to [this](https://developers.google.com/web/fundamentals/design-and-ui/browser-customization/) doc.