Ключевые слова: 2021, abstract, angielski, annual, article, background, backgrounds, banner, business, calendar, card, celebration, christmas, colorful, concept, creative, date, day, design, element, event, happy, holiday, illustration, invitation, isolated, january, june, modern, monday, month, monthly, new, new year, number, office, organizer, paper, personal organizer, planner, sign, styles, sunday, template, text, time, trends, week, white, year,