Ключевые слова: 20, 20th, adolescence, adulthood, age, aging, anniversary, banner, banquet, birthday, business, celebration, company, congratulations, date, day, design, element, event, fiesta, gift, graphic, holiday, icon, illustration, invitation, isolated, jubilation, jubilee, label, lightning, modern, number, numbers, poster, ribbon, sign, spark, symbol, template, th, twenty, wedding, year, years, young,