you can inject a locale class in your component's wrapper div and write style for that
e.g. Model
Resource resource = resourceResolver.getResource(path);
if (resource != null) {
Page targetPage = resource.adaptTo(Page.class);
if (targetPage != null) {
Locale pageLocale = targetPage.getLanguage(true);
String countryLocale = "cmp_mycmp__local_"+pageLocale.getCountry();
}
}
HTL
<div data-sly-use.obj="com.proj.core.models.CompModel" class="Some_class more_classes ${obj.countryLocaleClass ? obj.countryLocaleClass : ''}">