For some plugins you may need CSS styling to be changed, but if you change the plugin files, either you won’t update it, or you will lose your changes. I will show you a simple trick to overcome this problem using seperate stylesheets.
QTranslate is a flexible and simple blog translation plugin. Using QTranslate you can easily convert your blog to a multilingual site. However to use it fully functional, you need a few modifications in your theme. Here I will show you how to fix your links and content based on current language on Qtranslate.