Yes. override is enable in template settings and the code below in override.css
/*
#------------------------------------------------------------------------
# News - December Joomla! template (for Joomla 2.5)
#
# Copyright (C) 2007-2012 Gavick.com. All Rights Reserved.
# License: Copyrighted Commercial Software
# Website:
http://www.gavick.com# Support:
[email protected]*/
/* Here you can include your override CSS styles */
/* tablet/mobile suffixes */
.notablet {
display: block;
}
.nomobile {
display: block;
}
.onlytablet {
display: block;
}
.onlymobile {
display: block;
}
@media only screen and (min-width:720px) and (max-width: 985px) {
.onlytablet {
display: block;
}
.notablet {
display: none;
}
}
@media only screen and (max-width:719px) {
.nomobile {
display: none;
}
.onlymobile {
display: block;
}
}