Responsive not working after converting html theme to Drupal theme While trying to convert a HTML responsive theme to Drupal 7 theme, it's responsive is not working!!!

Can anyone help me with this to sort the issue? We have copied Bartik theme and removed the CSS and pasted the HTML5 theme CSS and JS that we created. changed the index.tpl into page --front.tpl.php and copied it into the template folder. In the page-- front.tpl.php we give all the path for CSS and JS as:  

&lt;?php $path="http://".$_SERVER['HTTP_HOST']; ?&gt;
&lt;link rel="icon" href="$path."&gt;
&lt;link rel="shortcut icon" href="images/favicon.ico" /&gt;
&lt;link rel="stylesheet" href="&lt;?php echo $path.base_path().path_to_theme()?&gt;/css/style.css"&gt;. 


"As specified we gave path for all CSS and JS files, but don't know where we went wrong!!"
To create or convert a Drupal 7 responsive theme, it is not a good idea to start with stripping down and modifying a fully developed, non-responsive theme such as Bartik.

Instead you start out with a responsive starter theme or base theme framework, where the css is already reset for you and where the the framework is already prepared for you to add your own classes to construct whatever look and feel you're after.  Basically, you install your framework, then create a sub-theme, and use that you build your own responsive theme.

Good foundations for this is IMHO Zen, Omega or AdaptiveTheme (suggested by @Kojo in a comment), but many other alternatives exist.