Ключевые слова: 20, 20th, anniversary, art, black, business, business sale, calendar, celebration, celebration text, clip art, concept, contour illustration, date, day, december event, decoration, design, digital lettering, event, flat, glyph, graphic, happy, holiday, icon, illustration, isolated, line, linear, logo, month, number, number banner, outline, party poster, pictogram, reminder, season invitation, sign, stripes, stroke, symbol, thin, time, web, web sign, white, year,