Issues:
<!DOCTYPE html>
<!--[if lt IE 7]> <html lang="en" class="ie ie6 lte9 lte8 lte7 os-other"> <![endif]-->
<!--[if IE 7]> <html lang="en" class="ie ie7 lte9 lte8 lte7 os-other"> <![endif]-->
<!--[if IE 8]> <html lang="en" class="ie ie8 lte9 lte8 os-other"> <![endif]-->
<!--[if IE 9]> <html lang="en" class="ie ie9 lte9 os-other"> <![endif]-->
<!--[if gt IE 9]> <html lang="en" class="os-other"> <![endif]-->
<!--[if !IE]><!--> <html lang="en" class="os-other"> <!--<![endif]-->
<head>
...
</html>