Ключевые слова: app, celebrating, celebration, christmas, collection, concept, day, december, design, element, event, fest, festive, flat, graph, holiday, icicle, icon, illustration, info, isolated, line, linear, merry, mitten, new year, outline, pack, party, pictogram, reindeer, season, seasonal, set, sign, stroke, symbol, thin, traditional, web, website, winter, xmas,