Different CSS styles for each language

Thanks for the quick reply!
It’s still not working unfortunately.

I tried to go about it another way, by putting the language-specific styles in separate stylesheets, and tried to write a function to choose the right stylesheet (My current theme makes it kind of hard to edit the HTML directly), but I’m new to writing WordPress functions, and it didn’t work:

function language_stylesheet(){
if (qtranxf_getLanguage()==’en’){
echo’
<link rel=”stylesheet” href=”english.css”>’;
}
else{
echo'<link rel=”stylesheet” href=”japanese.css”>’;
}
}
add_action(‘wp_head’,’language_stylesheet’);

I found something which worked!
Using the lang selector:

:lang(ja){
/* Japanese-only styles */
}

:lang(en){
/* English-only styles */
}

Thanks for all your help!