Your font doesn't come with a character for š
, and its style fallbacks to sans-serif
.
You should expand your character set here (thanks @Jukka K. Korpela for pointing out that Latin and Latin Extended are enough for this case): And link to an extended webfont stylesheet:
<link href='http://fonts.googleapis.com/css?family=Open+Sans+Condensed:300&subset=latin,latin-ext' rel='stylesheet' type='text/css'>
Then your š
would come beautifully: DEMO.