added responsive menu

Signed-off-by: Viduranga Wijesooriya <vpowerrc@gmail.com>
added responsive menu

Signed-off-by: Viduranga Wijesooriya <vpowerrc@gmail.com>
added responsive menu

Signed-off-by: Viduranga Wijesooriya <vpowerrc@gmail.com>
added css for mobile

Signed-off-by: Viduranga Wijesooriya <vpowerrc@gmail.com>