Ключевые слова: 8, abstract, alphabet, background, black, button, calculate, calculator, collection, count, design, digit, division, education, eight, eighth, element, flat, font, graphic, icon, illustration, learn, mark, math, mathematical, media, minimalist, modern, multimedia, navigation, number, numeral, numerical, object, one, pictogram, school, shopping cart, sign, silhouette, software, sparse, symbol, text, type, typeface, typography, white,