<link rel="stylesheet" type="text/css" id="css">
<script language="javascript">
function dis(){
if((screen.width == 1920) && (screen.height == 1080)){
document.getElementById('css').href = '2.css';
}else if ((screen.width == 1366) && (screen.height == 768)){
document.getElementById('css').href = '1.css' ;
}else{
document.getElementById('css').href = '1.css';
}
}
dis();
</script>