Ключевые слова: backdrop, background, blackboard, bright, chalk writing, chalkboard, classroom, cloud, color, composite image, cube, design, desk, digital, digital tablet, drone, early bird, effect, emergency, futuristic, generated, glow, hand writing, hight angle, holding, information, interface, landing, message, mobile, nature, padlock, pattern, phone, pink, propeller, reaping, red, render, school, screen, screw, scrolling, seamless, shine, starters, symbol, table, tablet, tablet computer, tablet pc, technology, texture, touching, touchscreen, using, white, white background, writing,