Ключевые слова: abstract, background, business, button, circle, color, colorful, computer, concept, connect, contour, control, design, electric, electrical, electricity, electronic, element, energy, fill, filled, game, graphic, icon, illustration, internet, isolated, light, line, linear, modern, object, off, outline, power, press, push, round, shadow, sign, start, switch, symbol, technical, technology, web,