Hello Muhammad Shoaib,
You need to ftp the project files to the root of your host account. Then restore/attach a backup of your local database to the host database server. Finally you need to change the connectionsString element to point to the host database server instead of local server.
As for the css classes - they are embedded into dll files for each module. I attached some samples of stylesheets that you can use to style the controls you want.
the Telerik team